[INFO] cloning repository https://github.com/dimitarvp/cucurun
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dimitarvp/cucurun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdimitarvp%2Fcucurun", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdimitarvp%2Fcucurun'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 154f2fcc5826f366a9e4e49c53a217b2d857388f
[INFO] checking dimitarvp/cucurun against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdimitarvp%2Fcucurun" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dimitarvp/cucurun
[INFO] finished tweaking git repo https://github.com/dimitarvp/cucurun
[INFO] tweaked toml for git repo https://github.com/dimitarvp/cucurun written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dimitarvp/cucurun on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dimitarvp/cucurun already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03c6db8756258a34fe6b8c2b7a47673c566e5cc17708cd23b8e911340963faa6
[INFO] running `Command { std: "docker" "start" "-a" "03c6db8756258a34fe6b8c2b7a47673c566e5cc17708cd23b8e911340963faa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03c6db8756258a34fe6b8c2b7a47673c566e5cc17708cd23b8e911340963faa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03c6db8756258a34fe6b8c2b7a47673c566e5cc17708cd23b8e911340963faa6", kill_on_drop: false }`
[INFO] [stdout] 03c6db8756258a34fe6b8c2b7a47673c566e5cc17708cd23b8e911340963faa6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6f6de53793af2892831a8714b97756db3b7b2397d7d974ad98307072db78067
[INFO] running `Command { std: "docker" "start" "-a" "d6f6de53793af2892831a8714b97756db3b7b2397d7d974ad98307072db78067", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking shh v1.0.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking pathdiff v0.1.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]     Checking globwalk v0.7.3
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling derive_builder_core v0.5.0
[INFO] [stderr]     Checking gherkin_rust v0.6.0
[INFO] [stderr]     Checking cucumber_rust v0.6.8
[INFO] [stderr]     Checking cucurun v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]   --> src/integration_tests/mod.rs:51:67
[INFO] [stdout]    |
[INFO] [stdout] 51 |         then "we can use data tables to provide more parameters" |world, step| {
[INFO] [stdout]    |                                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]   --> src/integration_tests/mod.rs:45:77
[INFO] [stdout]    |
[INFO] [stdout] 45 |         then regex r"^we can also match (\d+) (.+) types$" (usize, String) |world, num, word, step| {
[INFO] [stdout]    |                                                                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:45:95
[INFO] [stdout]    |
[INFO] [stdout] 45 |         then regex r"^we can also match (\d+) (.+) types$" (usize, String) |world, num, word, step| {
[INFO] [stdout]    |                                                                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]   --> src/integration_tests/mod.rs:40:55
[INFO] [stdout]    |
[INFO] [stdout] 40 |         then regex r"^we can (.*) rules with regex$" |world, matches, step| {
[INFO] [stdout]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:40:71
[INFO] [stdout]    |
[INFO] [stdout] 40 |         then regex r"^we can (.*) rules with regex$" |world, matches, step| {
[INFO] [stdout]    |                                                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:35:48
[INFO] [stdout]    |
[INFO] [stdout] 35 |         then "I am interested in ATDD" |world, step| {
[INFO] [stdout]    |                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:29:51
[INFO] [stdout]    |
[INFO] [stdout] 29 |         when "I consider what I am doing" |world, step| {
[INFO] [stdout]    |                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:24:50
[INFO] [stdout]    |
[INFO] [stdout] 24 |         given "I am trying out Cucumber" |world, step| {
[INFO] [stdout]    |                                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scenario`
[INFO] [stdout]   --> src/integration_tests/mod.rs:66:25
[INFO] [stdout]    |
[INFO] [stdout] 66 | before!(a_before_fn => |scenario| {
[INFO] [stdout]    |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scenario`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scenario`
[INFO] [stdout]   --> src/integration_tests/mod.rs:71:24
[INFO] [stdout]    |
[INFO] [stdout] 71 | after!(an_after_fn => |scenario| {
[INFO] [stdout]    |                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scenario`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/integration_tests/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     steps!(crate::integration_tests::MyWorld => {
[INFO] [stdout] 24 | |         given "I am trying out Cucumber" |world, step| {
[INFO] [stdout] 25 | |             world.foo = "Some string".to_string();
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |         };
[INFO] [stdout] 62 | |     });
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::typed_regex` which comes from the expansion of the macro `steps` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]   --> src/integration_tests/mod.rs:51:67
[INFO] [stdout]    |
[INFO] [stdout] 51 |         then "we can use data tables to provide more parameters" |world, step| {
[INFO] [stdout]    |                                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]   --> src/integration_tests/mod.rs:45:77
[INFO] [stdout]    |
[INFO] [stdout] 45 |         then regex r"^we can also match (\d+) (.+) types$" (usize, String) |world, num, word, step| {
[INFO] [stdout]    |                                                                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:45:95
[INFO] [stdout]    |
[INFO] [stdout] 45 |         then regex r"^we can also match (\d+) (.+) types$" (usize, String) |world, num, word, step| {
[INFO] [stdout]    |                                                                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]   --> src/integration_tests/mod.rs:40:55
[INFO] [stdout]    |
[INFO] [stdout] 40 |         then regex r"^we can (.*) rules with regex$" |world, matches, step| {
[INFO] [stdout]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:40:71
[INFO] [stdout]    |
[INFO] [stdout] 40 |         then regex r"^we can (.*) rules with regex$" |world, matches, step| {
[INFO] [stdout]    |                                                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:35:48
[INFO] [stdout]    |
[INFO] [stdout] 35 |         then "I am interested in ATDD" |world, step| {
[INFO] [stdout]    |                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:29:51
[INFO] [stdout]    |
[INFO] [stdout] 29 |         when "I consider what I am doing" |world, step| {
[INFO] [stdout]    |                                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `step`
[INFO] [stdout]   --> src/integration_tests/mod.rs:24:50
[INFO] [stdout]    |
[INFO] [stdout] 24 |         given "I am trying out Cucumber" |world, step| {
[INFO] [stdout]    |                                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scenario`
[INFO] [stdout]   --> src/integration_tests/mod.rs:66:25
[INFO] [stdout]    |
[INFO] [stdout] 66 | before!(a_before_fn => |scenario| {
[INFO] [stdout]    |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scenario`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scenario`
[INFO] [stdout]   --> src/integration_tests/mod.rs:71:24
[INFO] [stdout]    |
[INFO] [stdout] 71 | after!(an_after_fn => |scenario| {
[INFO] [stdout]    |                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scenario`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cucurun` (bin "cucurun" test) due to 1 previous error; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/integration_tests/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     steps!(crate::integration_tests::MyWorld => {
[INFO] [stdout] 24 | |         given "I am trying out Cucumber" |world, step| {
[INFO] [stdout] 25 | |             world.foo = "Some string".to_string();
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |         };
[INFO] [stdout] 62 | |     });
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::typed_regex` which comes from the expansion of the macro `steps` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cucurun` (bin "cucurun") due to 1 previous error; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d6f6de53793af2892831a8714b97756db3b7b2397d7d974ad98307072db78067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6f6de53793af2892831a8714b97756db3b7b2397d7d974ad98307072db78067", kill_on_drop: false }`
[INFO] [stdout] d6f6de53793af2892831a8714b97756db3b7b2397d7d974ad98307072db78067
