diff --git a/Makefile b/Makefile
index 69bd795..895d3fd 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ SRC_DIR := src
 SOURCES != find '$(SRC_DIR)' -iname '*.v'
 
 V_PATH ?= v
-V := $(V_PATH) -showcc -gc boehm
+V := $(V_PATH) -showcc -gc boehm -W
 
 all: vieter
 
diff --git a/src/build/build.v b/src/build/build.v
index 2ad70a6..734427d 100644
--- a/src/build/build.v
+++ b/src/build/build.v
@@ -21,8 +21,8 @@ const (
 // system, install some necessary packages & creates a non-root user to run
 // makepkg with. The base image should be some Linux distribution that uses
 // Pacman as its package manager.
-pub fn create_build_image(base_image string) ?string {
-	mut dd := docker.new_conn()?
+pub fn create_build_image(base_image string) !string {
+	mut dd := docker.new_conn()!
 
 	defer {
 		dd.close() or {}
@@ -57,15 +57,15 @@ pub fn create_build_image(base_image string) ?string {
 	image_tag := if image_parts.len > 1 { image_parts[1] } else { 'latest' }
 
 	// We pull the provided image
-	dd.pull_image(image_name, image_tag)?
+	dd.pull_image(image_name, image_tag)!
 
-	id := dd.container_create(c)?.id
-	// id := docker.create_container(c)?
-	dd.container_start(id)?
+	id := dd.container_create(c)!.id
+	// id := docker.create_container(c)!
+	dd.container_start(id)!
 
 	// This loop waits until the container has stopped, so we can remove it after
 	for {
-		data := dd.container_inspect(id)?
+		data := dd.container_inspect(id)!
 
 		if !data.state.running {
 			break
@@ -79,8 +79,8 @@ pub fn create_build_image(base_image string) ?string {
 	// TODO also add the base image's name into the image name to prevent
 	// conflicts.
 	tag := time.sys_mono_now().str()
-	image := dd.create_image_from_container(id, 'vieter-build', tag)?
-	dd.container_remove(id)?
+	image := dd.create_image_from_container(id, 'vieter-build', tag)!
+	dd.container_remove(id)!
 
 	return image.id
 }
@@ -96,8 +96,8 @@ pub:
 // build_target builds, packages & publishes a given Arch package based on the
 // provided target. The base image ID should be of an image previously created
 // by create_build_image. It returns the logs of the container.
-pub fn build_target(address string, api_key string, base_image_id string, target &Target) ?BuildResult {
-	mut dd := docker.new_conn()?
+pub fn build_target(address string, api_key string, base_image_id string, target &Target) !BuildResult {
+	mut dd := docker.new_conn()!
 
 	defer {
 		dd.close() or {}
@@ -125,25 +125,25 @@ pub fn build_target(address string, api_key string, base_image_id string, target
 		user: '0:0'
 	}
 
-	id := dd.container_create(c)?.id
-	dd.container_start(id)?
+	id := dd.container_create(c)!.id
+	dd.container_start(id)!
 
-	mut data := dd.container_inspect(id)?
+	mut data := dd.container_inspect(id)!
 
 	// This loop waits until the container has stopped, so we can remove it after
 	for data.state.running {
 		time.sleep(1 * time.second)
 
-		data = dd.container_inspect(id)?
+		data = dd.container_inspect(id)!
 	}
 
-	mut logs_stream := dd.container_get_logs(id)?
+	mut logs_stream := dd.container_get_logs(id)!
 
 	// Read in the entire stream
 	mut logs_builder := strings.new_builder(10 * 1024)
-	util.reader_to_writer(mut logs_stream, mut logs_builder)?
+	util.reader_to_writer(mut logs_stream, mut logs_builder)!
 
-	dd.container_remove(id)?
+	dd.container_remove(id)!
 
 	return BuildResult{
 		start_time: data.state.start_time
diff --git a/src/client/client.v b/src/client/client.v
index d68ff18..aa6094a 100644
--- a/src/client/client.v
+++ b/src/client/client.v
@@ -21,7 +21,7 @@ pub fn new(address string, api_key string) Client {
 
 // send_request_raw sends an HTTP request, returning the http.Response object.
 // It encodes the params so that they're safe to pass as HTTP query parameters.
-fn (c &Client) send_request_raw(method Method, url string, params map[string]string, body string) ?http.Response {
+fn (c &Client) send_request_raw(method Method, url string, params map[string]string, body string) !http.Response {
 	mut full_url := '$c.address$url'
 
 	if params.len > 0 {
@@ -38,31 +38,33 @@ fn (c &Client) send_request_raw(method Method, url string, params map[string]str
 		full_url = '$full_url?$params_str'
 	}
 
-	mut req := http.new_request(method, full_url, body)?
-	req.add_custom_header('X-Api-Key', c.api_key)?
+	// Looking at the source code, this function doesn't actually fail, so I'm
+	// not sure why it returns an optional
+	mut req := http.new_request(method, full_url, body) or { return error('') }
+	req.add_custom_header('X-Api-Key', c.api_key)!
 
-	res := req.do()?
+	res := req.do()!
 
 	return res
 }
 
 // send_request<T> just calls send_request_with_body<T> with an empty body.
-fn (c &Client) send_request<T>(method Method, url string, params map[string]string) ?Response<T> {
+fn (c &Client) send_request<T>(method Method, url string, params map[string]string) !Response<T> {
 	return c.send_request_with_body<T>(method, url, params, '')
 }
 
 // send_request_with_body<T> calls send_request_raw_response & parses its
 // output as a Response<T> object.
-fn (c &Client) send_request_with_body<T>(method Method, url string, params map[string]string, body string) ?Response<T> {
-	res_text := c.send_request_raw_response(method, url, params, body)?
-	data := json.decode(Response<T>, res_text)?
+fn (c &Client) send_request_with_body<T>(method Method, url string, params map[string]string, body string) !Response<T> {
+	res_text := c.send_request_raw_response(method, url, params, body)!
+	data := json.decode(Response<T>, res_text)!
 
 	return data
 }
 
 // send_request_raw_response returns the raw text response for an HTTP request.
-fn (c &Client) send_request_raw_response(method Method, url string, params map[string]string, body string) ?string {
-	res := c.send_request_raw(method, url, params, body)?
+fn (c &Client) send_request_raw_response(method Method, url string, params map[string]string, body string) !string {
+	res := c.send_request_raw(method, url, params, body)!
 
 	return res.body
 }
diff --git a/src/client/logs.v b/src/client/logs.v
index b414245..eaddc8c 100644
--- a/src/client/logs.v
+++ b/src/client/logs.v
@@ -6,40 +6,40 @@ import web.response { Response }
 import time
 
 // get_build_logs returns all build logs.
-pub fn (c &Client) get_build_logs(filter BuildLogFilter) ?Response<[]BuildLog> {
+pub fn (c &Client) get_build_logs(filter BuildLogFilter) !Response<[]BuildLog> {
 	params := models.params_from(filter)
-	data := c.send_request<[]BuildLog>(Method.get, '/api/v1/logs', params)?
+	data := c.send_request<[]BuildLog>(Method.get, '/api/v1/logs', params)!
 
 	return data
 }
 
 // get_build_logs_for_target returns all build logs for a given target.
-pub fn (c &Client) get_build_logs_for_target(target_id int) ?Response<[]BuildLog> {
+pub fn (c &Client) get_build_logs_for_target(target_id int) !Response<[]BuildLog> {
 	params := {
 		'repo': target_id.str()
 	}
 
-	data := c.send_request<[]BuildLog>(Method.get, '/api/v1/logs', params)?
+	data := c.send_request<[]BuildLog>(Method.get, '/api/v1/logs', params)!
 
 	return data
 }
 
 // get_build_log returns a specific build log.
-pub fn (c &Client) get_build_log(id int) ?Response<BuildLog> {
-	data := c.send_request<BuildLog>(Method.get, '/api/v1/logs/$id', {})?
+pub fn (c &Client) get_build_log(id int) !Response<BuildLog> {
+	data := c.send_request<BuildLog>(Method.get, '/api/v1/logs/$id', {})!
 
 	return data
 }
 
 // get_build_log_content returns the contents of the build log file.
-pub fn (c &Client) get_build_log_content(id int) ?string {
-	data := c.send_request_raw_response(Method.get, '/api/v1/logs/$id/content', {}, '')?
+pub fn (c &Client) get_build_log_content(id int) !string {
+	data := c.send_request_raw_response(Method.get, '/api/v1/logs/$id/content', {}, '')!
 
 	return data
 }
 
 // add_build_log adds a new build log to the server.
-pub fn (c &Client) add_build_log(target_id int, start_time time.Time, end_time time.Time, arch string, exit_code int, content string) ?Response<int> {
+pub fn (c &Client) add_build_log(target_id int, start_time time.Time, end_time time.Time, arch string, exit_code int, content string) !Response<int> {
 	params := {
 		'target':    target_id.str()
 		'startTime': start_time.unix_time().str()
@@ -48,7 +48,7 @@ pub fn (c &Client) add_build_log(target_id int, start_time time.Time, end_time t
 		'exitCode':  exit_code.str()
 	}
 
-	data := c.send_request_with_body<int>(Method.post, '/api/v1/logs', params, content)?
+	data := c.send_request_with_body<int>(Method.post, '/api/v1/logs', params, content)!
 
 	return data
 }
diff --git a/src/client/targets.v b/src/client/targets.v
index c5e44fe..fd4254c 100644
--- a/src/client/targets.v
+++ b/src/client/targets.v
@@ -5,21 +5,21 @@ import net.http { Method }
 import web.response { Response }
 
 // get_targets returns a list of targets, given a filter object.
-pub fn (c &Client) get_targets(filter TargetFilter) ?[]Target {
+pub fn (c &Client) get_targets(filter TargetFilter) ![]Target {
 	params := models.params_from(filter)
-	data := c.send_request<[]Target>(Method.get, '/api/v1/targets', params)?
+	data := c.send_request<[]Target>(Method.get, '/api/v1/targets', params)!
 
 	return data.data
 }
 
 // get_all_targets retrieves *all* targs from the API using the default
 // limit.
-pub fn (c &Client) get_all_targets() ?[]Target {
+pub fn (c &Client) get_all_targets() ![]Target {
 	mut targets := []Target{}
 	mut offset := u64(0)
 
 	for {
-		sub_targets := c.get_targets(offset: offset)?
+		sub_targets := c.get_targets(offset: offset)!
 
 		if sub_targets.len == 0 {
 			break
@@ -34,8 +34,8 @@ pub fn (c &Client) get_all_targets() ?[]Target {
 }
 
 // get_target returns the target for a specific id.
-pub fn (c &Client) get_target(id int) ?Target {
-	data := c.send_request<Target>(Method.get, '/api/v1/targets/$id', {})?
+pub fn (c &Client) get_target(id int) !Target {
+	data := c.send_request<Target>(Method.get, '/api/v1/targets/$id', {})!
 
 	return data.data
 }
@@ -49,24 +49,24 @@ pub struct NewTarget {
 }
 
 // add_target adds a new target to the server.
-pub fn (c &Client) add_target(t NewTarget) ?Response<int> {
+pub fn (c &Client) add_target(t NewTarget) !Response<int> {
 	params := models.params_from<NewTarget>(t)
-	data := c.send_request<int>(Method.post, '/api/v1/targets', params)?
+	data := c.send_request<int>(Method.post, '/api/v1/targets', params)!
 
 	return data
 }
 
 // remove_target removes the target with the given id from the server.
-pub fn (c &Client) remove_target(id int) ?Response<string> {
-	data := c.send_request<string>(Method.delete, '/api/v1/targets/$id', {})?
+pub fn (c &Client) remove_target(id int) !Response<string> {
+	data := c.send_request<string>(Method.delete, '/api/v1/targets/$id', {})!
 
 	return data
 }
 
 // patch_target sends a PATCH request to the given target with the params as
 // payload.
-pub fn (c &Client) patch_target(id int, params map[string]string) ?Response<string> {
-	data := c.send_request<string>(Method.patch, '/api/v1/targets/$id', params)?
+pub fn (c &Client) patch_target(id int, params map[string]string) !Response<string> {
+	data := c.send_request<string>(Method.patch, '/api/v1/targets/$id', params)!
 
 	return data
 }
diff --git a/src/console/aur/aur.v b/src/console/aur/aur.v
index c98f8e6..6a061dd 100644
--- a/src/console/aur/aur.v
+++ b/src/console/aur/aur.v
@@ -21,12 +21,12 @@ pub fn cmd() cli.Command {
 				name: 'search'
 				description: 'Search for packages.'
 				required_args: 1
-				execute: fn (cmd cli.Command) ? {
+				execute: fn (cmd cli.Command) ! {
 					c := aur.new()
-					pkgs := c.search(cmd.args[0])?
+					pkgs := c.search(cmd.args[0])!
 					data := pkgs.map([it.name, it.description])
 
-					println(console.pretty_table(['name', 'description'], data)?)
+					println(console.pretty_table(['name', 'description'], data)!)
 				}
 			},
 			cli.Command{
@@ -34,12 +34,12 @@ pub fn cmd() cli.Command {
 				usage: 'repo pkg-name [pkg-name...]'
 				description: 'Add the given AUR package(s) to Vieter. Non-existent packages will be silently ignored.'
 				required_args: 2
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
 					c := aur.new()
-					pkgs := c.info(cmd.args[1..])?
+					pkgs := c.info(cmd.args[1..])!
 
 					vc := client.new(conf.address, conf.api_key)
 
diff --git a/src/console/console.v b/src/console/console.v
index caf4cca..5c40de8 100644
--- a/src/console/console.v
+++ b/src/console/console.v
@@ -13,7 +13,7 @@ pub fn tabbed_table(data [][]string) string {
 // pretty_table converts a list of string data into a pretty table. Many thanks
 // to @hungrybluedev in the Vlang Discord for providing this code!
 // https://ptb.discord.com/channels/592103645835821068/592106336838352923/970278787143045192
-pub fn pretty_table(header []string, data [][]string) ?string {
+pub fn pretty_table(header []string, data [][]string) !string {
 	column_count := header.len
 
 	mut column_widths := []int{len: column_count, init: header[it].len}
@@ -26,7 +26,7 @@ pub fn pretty_table(header []string, data [][]string) ?string {
 		}
 	}
 
-	single_line_length := arrays.sum(column_widths)? + (column_count + 1) * 3 - 4
+	single_line_length := arrays.sum(column_widths)! + (column_count + 1) * 3 - 4
 
 	horizontal_line := '+' + strings.repeat(`-`, single_line_length) + '+'
 	mut buffer := strings.new_builder(data.len * single_line_length)
@@ -64,12 +64,12 @@ pub fn pretty_table(header []string, data [][]string) ?string {
 
 // export_man_pages recursively generates all man pages for the given
 // cli.Command & writes them to the given directory.
-pub fn export_man_pages(cmd cli.Command, path string) ? {
+pub fn export_man_pages(cmd cli.Command, path string) ! {
 	man := cmd.manpage()
 	os.write_file(os.join_path_single(path, cmd.full_name().replace(' ', '-') + '.1'),
-		man)?
+		man)!
 
 	for sub_cmd in cmd.commands {
-		export_man_pages(sub_cmd, path)?
+		export_man_pages(sub_cmd, path)!
 	}
 }
diff --git a/src/console/logs/logs.v b/src/console/logs/logs.v
index 41830c2..6d5ffad 100644
--- a/src/console/logs/logs.v
+++ b/src/console/logs/logs.v
@@ -63,30 +63,30 @@ pub fn cmd() cli.Command {
 						flag: cli.FlagType.string
 					},
 				]
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
 					mut filter := BuildLogFilter{}
 
-					limit := cmd.flags.get_int('limit')?
+					limit := cmd.flags.get_int('limit')!
 					if limit != 0 {
 						filter.limit = u64(limit)
 					}
 
-					offset := cmd.flags.get_int('offset')?
+					offset := cmd.flags.get_int('offset')!
 					if offset != 0 {
 						filter.offset = u64(offset)
 					}
 
-					target_id := cmd.flags.get_int('target')?
+					target_id := cmd.flags.get_int('target')!
 					if target_id != 0 {
 						filter.target = target_id
 					}
 
 					tz_offset := time.offset()
 
-					if cmd.flags.get_bool('today')? {
+					if cmd.flags.get_bool('today')! {
 						today := time.now()
 
 						filter.after = time.new_time(time.Time{
@@ -98,12 +98,12 @@ pub fn cmd() cli.Command {
 					}
 					// The -today flag overwrites any of the other date flags.
 					else {
-						day_str := cmd.flags.get_string('day')?
-						before_str := cmd.flags.get_string('before')?
-						after_str := cmd.flags.get_string('after')?
+						day_str := cmd.flags.get_string('day')!
+						before_str := cmd.flags.get_string('before')!
+						after_str := cmd.flags.get_string('after')!
 
 						if day_str != '' {
-							day := time.parse_rfc3339(day_str)?
+							day := time.parse_rfc3339(day_str)!
 							day_utc := time.new_time(time.Time{
 								year: day.year
 								month: day.month
@@ -118,24 +118,24 @@ pub fn cmd() cli.Command {
 							filter.before = day_utc.add_days(1)
 						} else {
 							if before_str != '' {
-								filter.before = time.parse(before_str)?.add_seconds(-tz_offset)
+								filter.before = time.parse(before_str)!.add_seconds(-tz_offset)
 							}
 
 							if after_str != '' {
-								filter.after = time.parse(after_str)?.add_seconds(-tz_offset)
+								filter.after = time.parse(after_str)!.add_seconds(-tz_offset)
 							}
 						}
 					}
 
-					if cmd.flags.get_bool('failed')? {
+					if cmd.flags.get_bool('failed')! {
 						filter.exit_codes = [
 							'!0',
 						]
 					}
 
-					raw := cmd.flags.get_bool('raw')?
+					raw := cmd.flags.get_bool('raw')!
 
-					list(conf, filter, raw)?
+					list(conf, filter, raw)!
 				}
 			},
 			cli.Command{
@@ -143,12 +143,12 @@ pub fn cmd() cli.Command {
 				required_args: 1
 				usage: 'id'
 				description: 'Show all info for a specific build log.'
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
 					id := cmd.args[0].int()
-					info(conf, id)?
+					info(conf, id)!
 				}
 			},
 			cli.Command{
@@ -156,12 +156,12 @@ pub fn cmd() cli.Command {
 				required_args: 1
 				usage: 'id'
 				description: 'Output the content of a build log to stdout.'
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
 					id := cmd.args[0].int()
-					content(conf, id)?
+					content(conf, id)!
 				}
 			},
 		]
@@ -169,46 +169,46 @@ pub fn cmd() cli.Command {
 }
 
 // print_log_list prints a list of logs.
-fn print_log_list(logs []BuildLog, raw bool) ? {
+fn print_log_list(logs []BuildLog, raw bool) ! {
 	data := logs.map([it.id.str(), it.target_id.str(), it.start_time.local().str(),
 		it.exit_code.str()])
 
 	if raw {
 		println(console.tabbed_table(data))
 	} else {
-		println(console.pretty_table(['id', 'target', 'start time', 'exit code'], data)?)
+		println(console.pretty_table(['id', 'target', 'start time', 'exit code'], data)!)
 	}
 }
 
 // list prints a list of all build logs.
-fn list(conf Config, filter BuildLogFilter, raw bool) ? {
+fn list(conf Config, filter BuildLogFilter, raw bool) ! {
 	c := client.new(conf.address, conf.api_key)
-	logs := c.get_build_logs(filter)?.data
+	logs := c.get_build_logs(filter)!.data
 
-	print_log_list(logs, raw)?
+	print_log_list(logs, raw)!
 }
 
 // list prints a list of all build logs for a given target.
-fn list_for_target(conf Config, target_id int, raw bool) ? {
+fn list_for_target(conf Config, target_id int, raw bool) ! {
 	c := client.new(conf.address, conf.api_key)
-	logs := c.get_build_logs_for_target(target_id)?.data
+	logs := c.get_build_logs_for_target(target_id)!.data
 
-	print_log_list(logs, raw)?
+	print_log_list(logs, raw)!
 }
 
 // info print the detailed info for a given build log.
-fn info(conf Config, id int) ? {
+fn info(conf Config, id int) ! {
 	c := client.new(conf.address, conf.api_key)
-	log := c.get_build_log(id)?.data
+	log := c.get_build_log(id)!.data
 
 	print(log)
 }
 
 // content outputs the contents of the log file for a given build log to
 // stdout.
-fn content(conf Config, id int) ? {
+fn content(conf Config, id int) ! {
 	c := client.new(conf.address, conf.api_key)
-	content := c.get_build_log_content(id)?
+	content := c.get_build_log_content(id)!
 
 	println(content)
 }
diff --git a/src/console/man/man.v b/src/console/man/man.v
index d91a140..22cb5f7 100644
--- a/src/console/man/man.v
+++ b/src/console/man/man.v
@@ -11,11 +11,11 @@ pub fn cmd() cli.Command {
 		description: 'Generate all man pages & save them in the given directory.'
 		usage: 'dir'
 		required_args: 1
-		execute: fn (cmd cli.Command) ? {
+		execute: fn (cmd cli.Command) ! {
 			root := cmd.root()
-			os.mkdir_all(cmd.args[0])?
+			os.mkdir_all(cmd.args[0])!
 
-			console.export_man_pages(root, cmd.args[0])?
+			console.export_man_pages(root, cmd.args[0])!
 		}
 	}
 }
diff --git a/src/console/schedule/schedule.v b/src/console/schedule/schedule.v
index 8fceddd..7ce0516 100644
--- a/src/console/schedule/schedule.v
+++ b/src/console/schedule/schedule.v
@@ -18,11 +18,11 @@ pub fn cmd() cli.Command {
 				default_value: ['5']
 			},
 		]
-		execute: fn (cmd cli.Command) ? {
-			ce := parse_expression(cmd.args.join(' '))?
-			count := cmd.flags.get_int('count')?
+		execute: fn (cmd cli.Command) ! {
+			ce := parse_expression(cmd.args.join(' '))!
+			count := cmd.flags.get_int('count')!
 
-			for t in ce.next_n(time.now(), count)? {
+			for t in ce.next_n(time.now(), count)! {
 				println(t)
 			}
 		}
diff --git a/src/console/targets/build.v b/src/console/targets/build.v
index 6337aa3..83ebde2 100644
--- a/src/console/targets/build.v
+++ b/src/console/targets/build.v
@@ -6,29 +6,29 @@ import os
 import build
 
 // build locally builds the target with the given id.
-fn build(conf Config, target_id int) ? {
+fn build(conf Config, target_id int) ! {
 	c := client.new(conf.address, conf.api_key)
-	target := c.get_target(target_id)?
+	target := c.get_target(target_id)!
 
 	build_arch := os.uname().machine
 
 	println('Creating base image...')
-	image_id := build.create_build_image(conf.base_image)?
+	image_id := build.create_build_image(conf.base_image)!
 
 	println('Running build...')
-	res := build.build_target(conf.address, conf.api_key, image_id, target)?
+	res := build.build_target(conf.address, conf.api_key, image_id, target)!
 
 	println('Removing build image...')
 
-	mut dd := docker.new_conn()?
+	mut dd := docker.new_conn()!
 
 	defer {
 		dd.close() or {}
 	}
 
-	dd.remove_image(image_id)?
+	dd.remove_image(image_id)!
 
 	println('Uploading logs to Vieter...')
 	c.add_build_log(target.id, res.start_time, res.end_time, build_arch, res.exit_code,
-		res.logs)?
+		res.logs)!
 }
diff --git a/src/console/targets/targets.v b/src/console/targets/targets.v
index 5640011..774a129 100644
--- a/src/console/targets/targets.v
+++ b/src/console/targets/targets.v
@@ -39,30 +39,30 @@ pub fn cmd() cli.Command {
 						flag: cli.FlagType.string
 					},
 				]
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
 					mut filter := TargetFilter{}
 
-					limit := cmd.flags.get_int('limit')?
+					limit := cmd.flags.get_int('limit')!
 					if limit != 0 {
 						filter.limit = u64(limit)
 					}
 
-					offset := cmd.flags.get_int('offset')?
+					offset := cmd.flags.get_int('offset')!
 					if offset != 0 {
 						filter.offset = u64(offset)
 					}
 
-					repo := cmd.flags.get_string('repo')?
+					repo := cmd.flags.get_string('repo')!
 					if repo != '' {
 						filter.repo = repo
 					}
 
-					raw := cmd.flags.get_bool('raw')?
+					raw := cmd.flags.get_bool('raw')!
 
-					list(conf, filter, raw)?
+					list(conf, filter, raw)!
 				}
 			},
 			cli.Command{
@@ -83,20 +83,20 @@ pub fn cmd() cli.Command {
 						flag: cli.FlagType.string
 					},
 				]
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
 					t := NewTarget{
-						kind: cmd.flags.get_string('kind')?
+						kind: cmd.flags.get_string('kind')!
 						url: cmd.args[0]
 						repo: cmd.args[1]
 						branch: cmd.flags.get_string('branch') or { '' }
 					}
 
-					raw := cmd.flags.get_bool('raw')?
+					raw := cmd.flags.get_bool('raw')!
 
-					add(conf, t, raw)?
+					add(conf, t, raw)!
 				}
 			},
 			cli.Command{
@@ -104,11 +104,11 @@ pub fn cmd() cli.Command {
 				required_args: 1
 				usage: 'id'
 				description: 'Remove a target that matches the given id.'
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
-					remove(conf, cmd.args[0])?
+					remove(conf, cmd.args[0])!
 				}
 			},
 			cli.Command{
@@ -116,11 +116,11 @@ pub fn cmd() cli.Command {
 				required_args: 1
 				usage: 'id'
 				description: 'Show detailed information for the target matching the id.'
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
-					info(conf, cmd.args[0])?
+					info(conf, cmd.args[0])!
 				}
 			},
 			cli.Command{
@@ -160,9 +160,9 @@ pub fn cmd() cli.Command {
 						flag: cli.FlagType.string
 					},
 				]
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
 					found := cmd.flags.get_all_found()
 
@@ -170,11 +170,11 @@ pub fn cmd() cli.Command {
 
 					for f in found {
 						if f.name != 'config-file' {
-							params[f.name] = f.get_string()?
+							params[f.name] = f.get_string()!
 						}
 					}
 
-					patch(conf, cmd.args[0], params)?
+					patch(conf, cmd.args[0], params)!
 				}
 			},
 			cli.Command{
@@ -182,11 +182,11 @@ pub fn cmd() cli.Command {
 				required_args: 1
 				usage: 'id'
 				description: 'Build the target with the given id & publish it.'
-				execute: fn (cmd cli.Command) ? {
-					config_file := cmd.flags.get_string('config-file')?
-					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+				execute: fn (cmd cli.Command) ! {
+					config_file := cmd.flags.get_string('config-file')!
+					conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
-					build(conf, cmd.args[0].int())?
+					build(conf, cmd.args[0].int())!
 				}
 			},
 		]
@@ -197,22 +197,22 @@ pub fn cmd() cli.Command {
 // ID. If multiple or none are found, an error is raised.
 
 // list prints out a list of all repositories.
-fn list(conf Config, filter TargetFilter, raw bool) ? {
+fn list(conf Config, filter TargetFilter, raw bool) ! {
 	c := client.new(conf.address, conf.api_key)
-	repos := c.get_targets(filter)?
+	repos := c.get_targets(filter)!
 	data := repos.map([it.id.str(), it.kind, it.url, it.repo])
 
 	if raw {
 		println(console.tabbed_table(data))
 	} else {
-		println(console.pretty_table(['id', 'kind', 'url', 'repo'], data)?)
+		println(console.pretty_table(['id', 'kind', 'url', 'repo'], data)!)
 	}
 }
 
 // add adds a new repository to the server's list.
-fn add(conf Config, t &NewTarget, raw bool) ? {
+fn add(conf Config, t &NewTarget, raw bool) ! {
 	c := client.new(conf.address, conf.api_key)
-	res := c.add_target(t)?
+	res := c.add_target(t)!
 
 	if raw {
 		println(res.data)
@@ -222,18 +222,18 @@ fn add(conf Config, t &NewTarget, raw bool) ? {
 }
 
 // remove removes a repository from the server's list.
-fn remove(conf Config, id string) ? {
+fn remove(conf Config, id string) ! {
 	id_int := id.int()
 
 	if id_int != 0 {
 		c := client.new(conf.address, conf.api_key)
-		res := c.remove_target(id_int)?
+		res := c.remove_target(id_int)!
 		println(res.message)
 	}
 }
 
 // patch patches a given repository with the provided params.
-fn patch(conf Config, id string, params map[string]string) ? {
+fn patch(conf Config, id string, params map[string]string) ! {
 	// We check the cron expression first because it's useless to send an
 	// invalid one to the server.
 	if 'schedule' in params && params['schedule'] != '' {
@@ -245,14 +245,14 @@ fn patch(conf Config, id string, params map[string]string) ? {
 	id_int := id.int()
 	if id_int != 0 {
 		c := client.new(conf.address, conf.api_key)
-		res := c.patch_target(id_int, params)?
+		res := c.patch_target(id_int, params)!
 
 		println(res.message)
 	}
 }
 
 // info shows detailed information for a given repo.
-fn info(conf Config, id string) ? {
+fn info(conf Config, id string) ! {
 	id_int := id.int()
 
 	if id_int == 0 {
@@ -260,6 +260,6 @@ fn info(conf Config, id string) ? {
 	}
 
 	c := client.new(conf.address, conf.api_key)
-	repo := c.get_target(id_int)?
+	repo := c.get_target(id_int)!
 	println(repo)
 }
diff --git a/src/cron/cli.v b/src/cron/cli.v
index 4d95833..0d7a042 100644
--- a/src/cron/cli.v
+++ b/src/cron/cli.v
@@ -22,11 +22,11 @@ pub fn cmd() cli.Command {
 	return cli.Command{
 		name: 'cron'
 		description: 'Start the cron service that periodically runs builds.'
-		execute: fn (cmd cli.Command) ? {
-			config_file := cmd.flags.get_string('config-file')?
-			conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+		execute: fn (cmd cli.Command) ! {
+			config_file := cmd.flags.get_string('config-file')!
+			conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
-			cron(conf)?
+			cron(conf)!
 		}
 	}
 }
diff --git a/src/cron/cron.v b/src/cron/cron.v
index 5f128cf..f1d6b7b 100644
--- a/src/cron/cron.v
+++ b/src/cron/cron.v
@@ -8,7 +8,7 @@ import os
 const log_file_name = 'vieter.cron.log'
 
 // cron starts a cron daemon & starts periodically scheduling builds.
-pub fn cron(conf Config) ? {
+pub fn cron(conf Config) ! {
 	// Configure logger
 	log_level := log.level_from_tag(conf.log_level) or {
 		return error('Invalid log level. The allowed values are FATAL, ERROR, WARN, INFO & DEBUG.')
@@ -27,7 +27,7 @@ pub fn cron(conf Config) ? {
 	}
 
 	mut d := daemon.init_daemon(logger, conf.address, conf.api_key, conf.base_image, ce,
-		conf.max_concurrent_builds, conf.api_update_frequency, conf.image_rebuild_frequency)?
+		conf.max_concurrent_builds, conf.api_update_frequency, conf.image_rebuild_frequency)!
 
 	d.run()
 }
diff --git a/src/cron/daemon/daemon.v b/src/cron/daemon/daemon.v
index 934d35a..8c6516c 100644
--- a/src/cron/daemon/daemon.v
+++ b/src/cron/daemon/daemon.v
@@ -53,7 +53,7 @@ mut:
 
 // init_daemon initializes a new Daemon object. It renews the targets &
 // populates the build queue for the first time.
-pub fn init_daemon(logger log.Log, address string, api_key string, base_image string, global_schedule CronExpression, max_concurrent_builds int, api_update_frequency int, image_rebuild_frequency int) ?Daemon {
+pub fn init_daemon(logger log.Log, address string, api_key string, base_image string, global_schedule CronExpression, max_concurrent_builds int, api_update_frequency int, image_rebuild_frequency int) !Daemon {
 	mut d := Daemon{
 		client: client.new(address, api_key)
 		base_image: base_image
@@ -207,7 +207,7 @@ fn (mut d Daemon) renew_queue() {
 
 	// For some reason, using
 	// ```v
-	// for d.queue.len() > 0 && d.queue.peek() ?.timestamp < now {
+	// for d.queue.len() > 0 && d.queue.peek() !.timestamp < now {
 	//```
 	// here causes the function to prematurely just exit, without any errors or anything, very weird
 	// https://github.com/vlang/v/issues/14042
diff --git a/src/cron/daemon/log.v b/src/cron/daemon/log.v
index 003898b..95a50e7 100644
--- a/src/cron/daemon/log.v
+++ b/src/cron/daemon/log.v
@@ -3,33 +3,33 @@ module daemon
 import log
 
 // log reate a log message with the given level
-pub fn (mut d Daemon) log(msg &string, level log.Level) {
+pub fn (mut d Daemon) log(msg string, level log.Level) {
 	lock d.logger {
 		d.logger.send_output(msg, level)
 	}
 }
 
 // lfatal create a log message with the fatal level
-pub fn (mut d Daemon) lfatal(msg &string) {
+pub fn (mut d Daemon) lfatal(msg string) {
 	d.log(msg, log.Level.fatal)
 }
 
 // lerror create a log message with the error level
-pub fn (mut d Daemon) lerror(msg &string) {
+pub fn (mut d Daemon) lerror(msg string) {
 	d.log(msg, log.Level.error)
 }
 
 // lwarn create a log message with the warn level
-pub fn (mut d Daemon) lwarn(msg &string) {
+pub fn (mut d Daemon) lwarn(msg string) {
 	d.log(msg, log.Level.warn)
 }
 
 // linfo create a log message with the info level
-pub fn (mut d Daemon) linfo(msg &string) {
+pub fn (mut d Daemon) linfo(msg string) {
 	d.log(msg, log.Level.info)
 }
 
 // ldebug create a log message with the debug level
-pub fn (mut d Daemon) ldebug(msg &string) {
+pub fn (mut d Daemon) ldebug(msg string) {
 	d.log(msg, log.Level.debug)
 }
diff --git a/src/cron/expression/expression.v b/src/cron/expression/expression.v
index 17d2dde..438805d 100644
--- a/src/cron/expression/expression.v
+++ b/src/cron/expression/expression.v
@@ -12,7 +12,7 @@ pub struct CronExpression {
 // next calculates the earliest time this cron expression is valid. It will
 // always pick a moment in the future, even if ref matches completely up to the
 // minute. This function conciously does not take gap years into account.
-pub fn (ce &CronExpression) next(ref time.Time) ?time.Time {
+pub fn (ce &CronExpression) next(ref time.Time) !time.Time {
 	// If the given ref matches the next cron occurence up to the minute, it
 	// will return that value. Because we always want to return a value in the
 	// future, we artifically shift the ref 60 seconds to make sure we always
@@ -117,19 +117,19 @@ pub fn (ce &CronExpression) next(ref time.Time) ?time.Time {
 
 // next_from_now returns the result of ce.next(ref) where ref is the result of
 // time.now().
-pub fn (ce &CronExpression) next_from_now() ?time.Time {
+pub fn (ce &CronExpression) next_from_now() !time.Time {
 	return ce.next(time.now())
 }
 
 // next_n returns the n next occurences of the expression, given a starting
 // time.
-pub fn (ce &CronExpression) next_n(ref time.Time, n int) ?[]time.Time {
+pub fn (ce &CronExpression) next_n(ref time.Time, n int) ![]time.Time {
 	mut times := []time.Time{cap: n}
 
-	times << ce.next(ref)?
+	times << ce.next(ref)!
 
 	for i in 1 .. n {
-		times << ce.next(times[i - 1])?
+		times << ce.next(times[i - 1])!
 	}
 
 	return times
@@ -137,7 +137,7 @@ pub fn (ce &CronExpression) next_n(ref time.Time, n int) ?[]time.Time {
 
 // parse_range parses a given string into a range of sorted integers, if
 // possible.
-fn parse_range(s string, min int, max int, mut bitv []bool) ? {
+fn parse_range(s string, min int, max int, mut bitv []bool) ! {
 	mut start := min
 	mut end := max
 	mut interval := 1
@@ -228,11 +228,11 @@ fn bitv_to_ints(bitv []bool, min int) []int {
 
 // parse_part parses a given part of a cron expression & returns the
 // corresponding array of ints.
-fn parse_part(s string, min int, max int) ?[]int {
+fn parse_part(s string, min int, max int) ![]int {
 	mut bitv := []bool{len: max - min + 1, init: false}
 
 	for range in s.split(',') {
-		parse_range(range, min, max, mut bitv)?
+		parse_range(range, min, max, mut bitv)!
 	}
 
 	return bitv_to_ints(bitv, min)
@@ -240,7 +240,7 @@ fn parse_part(s string, min int, max int) ?[]int {
 
 // parse_expression parses an entire cron expression string into a
 // CronExpression object, if possible.
-pub fn parse_expression(exp string) ?CronExpression {
+pub fn parse_expression(exp string) !CronExpression {
 	// The filter allows for multiple spaces between parts
 	mut parts := exp.split(' ').filter(it != '')
 
diff --git a/src/package/package.v b/src/package/package.v
index 9eaf5a2..aadf6f2 100644
--- a/src/package/package.v
+++ b/src/package/package.v
@@ -43,12 +43,12 @@ pub mut:
 }
 
 // checksum calculates the sha256 hash of the package
-pub fn (p &Pkg) checksum() ?string {
+pub fn (p &Pkg) checksum() !string {
 	return util.hash_file(p.path)
 }
 
 // parse_pkg_info_string parses a PkgInfo object from a string
-fn parse_pkg_info_string(pkg_info_str &string) ?PkgInfo {
+fn parse_pkg_info_string(pkg_info_str &string) !PkgInfo {
 	mut pkg_info := PkgInfo{}
 
 	// Iterate over the entire string
@@ -101,7 +101,7 @@ fn parse_pkg_info_string(pkg_info_str &string) ?PkgInfo {
 
 // read_pkg_archive extracts the file list & .PKGINFO contents from an archive
 // NOTE: this command only supports zstd-, xz- & gzip-compressed tarballs.
-pub fn read_pkg_archive(pkg_path string) ?Pkg {
+pub fn read_pkg_archive(pkg_path string) !Pkg {
 	if !os.is_file(pkg_path) {
 		return error("'$pkg_path' doesn't exist or isn't a file.")
 	}
@@ -159,7 +159,7 @@ pub fn read_pkg_archive(pkg_path string) ?Pkg {
 
 			pkg_text := unsafe { buf.vstring_with_len(size).clone() }
 
-			pkg_info = parse_pkg_info_string(pkg_text)?
+			pkg_info = parse_pkg_info_string(pkg_text)!
 		} else {
 			C.archive_read_data_skip(a)
 		}
@@ -201,7 +201,7 @@ pub fn (pkg &Pkg) filename() string {
 }
 
 // to_desc returns a desc file valid string representation
-pub fn (pkg &Pkg) to_desc() ?string {
+pub fn (pkg &Pkg) to_desc() !string {
 	p := pkg.info
 
 	// filename
@@ -222,7 +222,7 @@ pub fn (pkg &Pkg) to_desc() ?string {
 	desc += format_entry('CSIZE', p.csize.str())
 	desc += format_entry('ISIZE', p.size.str())
 
-	sha256sum := pkg.checksum()?
+	sha256sum := pkg.checksum()!
 
 	desc += format_entry('SHA256SUM', sha256sum)
 
diff --git a/src/server/cli.v b/src/server/cli.v
index 6fd09c5..26ee0f1 100644
--- a/src/server/cli.v
+++ b/src/server/cli.v
@@ -18,11 +18,11 @@ pub fn cmd() cli.Command {
 	return cli.Command{
 		name: 'server'
 		description: 'Start the Vieter server.'
-		execute: fn (cmd cli.Command) ? {
-			config_file := cmd.flags.get_string('config-file')?
-			conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)?
+		execute: fn (cmd cli.Command) ! {
+			config_file := cmd.flags.get_string('config-file')!
+			conf := vconf.load<Config>(prefix: 'VIETER_', default_path: config_file)!
 
-			server(conf)?
+			server(conf)!
 		}
 	}
 }
diff --git a/src/server/server.v b/src/server/server.v
index 9903cea..d5f6135 100644
--- a/src/server/server.v
+++ b/src/server/server.v
@@ -24,7 +24,7 @@ pub mut:
 }
 
 // server starts the web server & starts listening for requests
-pub fn server(conf Config) ? {
+pub fn server(conf Config) ! {
 	// Prevent using 'any' as the default arch
 	if conf.default_arch == 'any' {
 		util.exit_with_message(1, "'any' is not allowed as the value for default_arch.")
diff --git a/src/util/stream.v b/src/util/stream.v
index 06397aa..15cc618 100644
--- a/src/util/stream.v
+++ b/src/util/stream.v
@@ -5,7 +5,7 @@ import io
 import os
 
 // reader_to_writer tries to consume the entire reader & write it to the writer.
-pub fn reader_to_writer(mut reader io.Reader, mut writer io.Writer) ? {
+pub fn reader_to_writer(mut reader io.Reader, mut writer io.Writer) ! {
 	mut buf := []u8{len: 10 * 1024}
 
 	for {
@@ -21,8 +21,8 @@ pub fn reader_to_writer(mut reader io.Reader, mut writer io.Writer) ? {
 }
 
 // reader_to_file writes the contents of a BufferedReader to a file
-pub fn reader_to_file(mut reader io.BufferedReader, length int, path string) ? {
-	mut file := os.create(path)?
+pub fn reader_to_file(mut reader io.BufferedReader, length int, path string) ! {
+	mut file := os.create(path)!
 	defer {
 		file.close()
 	}
@@ -69,11 +69,11 @@ pub fn match_array_in_array<T>(a1 []T, a2 []T) int {
 
 // read_until_separator consumes an io.Reader until it encounters some
 // separator array. The data read is stored inside the provided res array.
-pub fn read_until_separator(mut reader io.Reader, mut res []u8, sep []u8) ? {
+pub fn read_until_separator(mut reader io.Reader, mut res []u8, sep []u8) ! {
 	mut buf := []u8{len: sep.len}
 
 	for {
-		c := reader.read(mut buf)?
+		c := reader.read(mut buf)!
 		res << buf[..c]
 
 		match_len := match_array_in_array(buf[..c], sep)
@@ -84,7 +84,7 @@ pub fn read_until_separator(mut reader io.Reader, mut res []u8, sep []u8) ? {
 
 		if match_len > 0 {
 			match_left := sep.len - match_len
-			c2 := reader.read(mut buf[..match_left])?
+			c2 := reader.read(mut buf[..match_left])!
 			res << buf[..c2]
 
 			if buf[..c2] == sep[match_len..] {
diff --git a/src/util/util.v b/src/util/util.v
index 4cd374e..213104c 100644
--- a/src/util/util.v
+++ b/src/util/util.v
@@ -23,7 +23,7 @@ pub fn exit_with_message(code int, msg string) {
 }
 
 // hash_file returns the sha256 hash of a given file
-pub fn hash_file(path &string) ?string {
+pub fn hash_file(path &string) !string {
 	file := os.open(path) or { return error('Failed to open file.') }
 
 	mut sha256sum := sha256.new()
@@ -39,7 +39,7 @@ pub fn hash_file(path &string) ?string {
 
 		// This function never actually fails, but returns an option to follow
 		// the Writer interface.
-		sha256sum.write(buf[..bytes_read])?
+		sha256sum.write(buf[..bytes_read])!
 	}
 
 	return sha256sum.checksum().hex()
diff --git a/src/web/logging.v b/src/web/logging.v
index fc697ff..12b07d7 100644
--- a/src/web/logging.v
+++ b/src/web/logging.v
@@ -3,33 +3,33 @@ module web
 import log
 
 // log reate a log message with the given level
-pub fn (mut ctx Context) log(msg &string, level log.Level) {
+pub fn (mut ctx Context) log(msg string, level log.Level) {
 	lock ctx.logger {
 		ctx.logger.send_output(msg, level)
 	}
 }
 
 // lfatal create a log message with the fatal level
-pub fn (mut ctx Context) lfatal(msg &string) {
+pub fn (mut ctx Context) lfatal(msg string) {
 	ctx.log(msg, log.Level.fatal)
 }
 
 // lerror create a log message with the error level
-pub fn (mut ctx Context) lerror(msg &string) {
+pub fn (mut ctx Context) lerror(msg string) {
 	ctx.log(msg, log.Level.error)
 }
 
 // lwarn create a log message with the warn level
-pub fn (mut ctx Context) lwarn(msg &string) {
+pub fn (mut ctx Context) lwarn(msg string) {
 	ctx.log(msg, log.Level.warn)
 }
 
 // linfo create a log message with the info level
-pub fn (mut ctx Context) linfo(msg &string) {
+pub fn (mut ctx Context) linfo(msg string) {
 	ctx.log(msg, log.Level.info)
 }
 
 // ldebug create a log message with the debug level
-pub fn (mut ctx Context) ldebug(msg &string) {
+pub fn (mut ctx Context) ldebug(msg string) {
 	ctx.log(msg, log.Level.debug)
 }