[INFO] crate cucumber_rust 0.6.1 is already in cache
[INFO] extracting crate cucumber_rust 0.6.1 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/cucumber_rust/0.6.1
[INFO] extracting crate cucumber_rust 0.6.1 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/cucumber_rust/0.6.1
[INFO] validating manifest of cucumber_rust-0.6.1 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cucumber_rust-0.6.1 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cucumber_rust-0.6.1
[INFO] removed 1 missing tests
[INFO] finished frobbing cucumber_rust-0.6.1
[INFO] frobbed toml for cucumber_rust-0.6.1 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/cucumber_rust/0.6.1/Cargo.toml
[INFO] started frobbing cucumber_rust-0.6.1
[INFO] removed 1 missing tests
[INFO] finished frobbing cucumber_rust-0.6.1
[INFO] frobbed toml for cucumber_rust-0.6.1 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/cucumber_rust/0.6.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cucumber_rust-0.6.1 against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/cucumber_rust/0.6.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 81f1ffd29d0c93d8727ef8b6992df36389bd55786efe2fa74fb13bdfc67fbac4
[INFO] running `"docker" "start" "-a" "81f1ffd29d0c93d8727ef8b6992df36389bd55786efe2fa74fb13bdfc67fbac4"`
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]     Checking pathdiff v0.1.0
[INFO] [stderr]     Checking shh v1.0.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking globwalk v0.7.1
[INFO] [stderr]    Compiling derive_builder_core v0.5.0
[INFO] [stderr]     Checking gherkin_rust v0.5.1
[INFO] [stderr]     Checking cucumber_rust v0.6.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused boxed `std::ops::Fn` trait object that must be used
[INFO] [stderr]   --> src/panic_trap.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         panic::take_hook();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: closures are lazy and do nothing unless called
[INFO] [stderr] 
[INFO] [stderr] warning: unused boxed `std::ops::Fn` trait object that must be used
[INFO] [stderr]   --> src/panic_trap.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         panic::take_hook();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: closures are lazy and do nothing unless called
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `steps`
[INFO] [stderr]  --> tests/cucumber.rs:2:26
[INFO] [stderr]   |
[INFO] [stderr] 2 | use cucumber::{cucumber, steps, before, after};
[INFO] [stderr]   |                          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scenario`
[INFO] [stderr]   --> tests/cucumber.rs:66:25
[INFO] [stderr]    |
[INFO] [stderr] 66 | before!(a_before_fn => |scenario| {
[INFO] [stderr]    |                         ^^^^^^^^ help: consider prefixing with an underscore: `_scenario`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scenario`
[INFO] [stderr]   --> tests/cucumber.rs:71:24
[INFO] [stderr]    |
[INFO] [stderr] 71 | after!(an_after_fn => |scenario| {
[INFO] [stderr]    |                        ^^^^^^^^ help: consider prefixing with an underscore: `_scenario`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `step`
[INFO] [stderr]   --> tests/cucumber.rs:24:50
[INFO] [stderr]    |
[INFO] [stderr] 24 |         given "I am trying out Cucumber" |world, step| {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_step`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `step`
[INFO] [stderr]   --> tests/cucumber.rs:29:51
[INFO] [stderr]    |
[INFO] [stderr] 29 |         when "I consider what I am doing" |world, step| {
[INFO] [stderr]    |                                                   ^^^^ help: consider prefixing with an underscore: `_step`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `step`
[INFO] [stderr]   --> tests/cucumber.rs:35:48
[INFO] [stderr]    |
[INFO] [stderr] 35 |         then "I am interested in ATDD" |world, step| {
[INFO] [stderr]    |                                                ^^^^ help: consider prefixing with an underscore: `_step`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> tests/cucumber.rs:40:55
[INFO] [stderr]    |
[INFO] [stderr] 40 |         then regex r"^we can (.*) rules with regex$" |world, matches, step| {
[INFO] [stderr]    |                                                       ^^^^^ help: consider prefixing with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `step`
[INFO] [stderr]   --> tests/cucumber.rs:40:71
[INFO] [stderr]    |
[INFO] [stderr] 40 |         then regex r"^we can (.*) rules with regex$" |world, matches, step| {
[INFO] [stderr]    |                                                                       ^^^^ help: consider prefixing with an underscore: `_step`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> tests/cucumber.rs:45:77
[INFO] [stderr]    |
[INFO] [stderr] 45 |         then regex r"^we can also match (\d+) (.+) types$" (usize, String) |world, num, word, step| {
[INFO] [stderr]    |                                                                             ^^^^^ help: consider prefixing with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `step`
[INFO] [stderr]   --> tests/cucumber.rs:45:95
[INFO] [stderr]    |
[INFO] [stderr] 45 |         then regex r"^we can also match (\d+) (.+) types$" (usize, String) |world, num, word, step| {
[INFO] [stderr]    |                                                                                               ^^^^ help: consider prefixing with an underscore: `_step`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `world`
[INFO] [stderr]   --> tests/cucumber.rs:51:67
[INFO] [stderr]    |
[INFO] [stderr] 51 |         then "we can use data tables to provide more parameters" |world, step| {
[INFO] [stderr]    |                                                                   ^^^^^ help: consider prefixing with an underscore: `_world`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.61s
[INFO] running `"docker" "inspect" "81f1ffd29d0c93d8727ef8b6992df36389bd55786efe2fa74fb13bdfc67fbac4"`
[INFO] running `"docker" "rm" "-f" "81f1ffd29d0c93d8727ef8b6992df36389bd55786efe2fa74fb13bdfc67fbac4"`
[INFO] [stdout] 81f1ffd29d0c93d8727ef8b6992df36389bd55786efe2fa74fb13bdfc67fbac4