[INFO] cloning repository https://github.com/swordsmanluke/countdown
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/swordsmanluke/countdown" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswordsmanluke%2Fcountdown", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswordsmanluke%2Fcountdown'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ce2ed9cc8fcbd4e0990fefe5a4f2d28f3aaa578
[INFO] testing swordsmanluke/countdown against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswordsmanluke%2Fcountdown" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/swordsmanluke/countdown on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/swordsmanluke/countdown
[INFO] finished tweaking git repo https://github.com/swordsmanluke/countdown
[INFO] tweaked toml for git repo https://github.com/swordsmanluke/countdown written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/swordsmanluke/countdown already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b315cc5f4082bd57d1f02d57db48ec47762d598f5f21d121b2214dfbd0a449d
[INFO] running `Command { std: "docker" "start" "-a" "1b315cc5f4082bd57d1f02d57db48ec47762d598f5f21d121b2214dfbd0a449d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b315cc5f4082bd57d1f02d57db48ec47762d598f5f21d121b2214dfbd0a449d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b315cc5f4082bd57d1f02d57db48ec47762d598f5f21d121b2214dfbd0a449d", kill_on_drop: false }`
[INFO] [stdout] 1b315cc5f4082bd57d1f02d57db48ec47762d598f5f21d121b2214dfbd0a449d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 593a531eceb2ff67421c1056a97f8dc1b239154e7e88608449c3c852321598f1
[INFO] running `Command { std: "docker" "start" "-a" "593a531eceb2ff67421c1056a97f8dc1b239154e7e88608449c3c852321598f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling countdown v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `NotFound`
[INFO] [stdout]  --> src/countdown/countdown_serializer.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     NotFound(String),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SaveError`
[INFO] [stdout]  --> src/countdown/countdown_serializer.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     SaveError(String),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `timers`
[INFO] [stdout]    --> src/countdown.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn timers(&mut self) -> Vec<String> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.46s
[INFO] running `Command { std: "docker" "inspect" "593a531eceb2ff67421c1056a97f8dc1b239154e7e88608449c3c852321598f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "593a531eceb2ff67421c1056a97f8dc1b239154e7e88608449c3c852321598f1", kill_on_drop: false }`
[INFO] [stdout] 593a531eceb2ff67421c1056a97f8dc1b239154e7e88608449c3c852321598f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37818f44a8b9c347d473470973497b86d387380a7bf77e7a7b99eca884227c00
[INFO] running `Command { std: "docker" "start" "-a" "37818f44a8b9c347d473470973497b86d387380a7bf77e7a7b99eca884227c00", kill_on_drop: false }`
[INFO] [stderr]    Compiling countdown v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `SaveError`
[INFO] [stdout]  --> src/countdown/countdown_serializer.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     SaveError(String),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/countdown.rs:230:9
[INFO] [stdout]     |
[INFO] [stdout] 230 |         ctr.add_timer(name, duration);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/countdown.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |         ctr.add_timer(name, duration);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/countdown.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         ctr.cancel_timer(name);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/countdown.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 254 |         ctr.add_timer(name, duration);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `Command { std: "docker" "inspect" "37818f44a8b9c347d473470973497b86d387380a7bf77e7a7b99eca884227c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37818f44a8b9c347d473470973497b86d387380a7bf77e7a7b99eca884227c00", kill_on_drop: false }`
[INFO] [stdout] 37818f44a8b9c347d473470973497b86d387380a7bf77e7a7b99eca884227c00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 577c6314f98b1bb54504b30a27cbc0a6f9e11ec1efddcf712d662dd54e52dbbc
[INFO] running `Command { std: "docker" "start" "-a" "577c6314f98b1bb54504b30a27cbc0a6f9e11ec1efddcf712d662dd54e52dbbc", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variant is never constructed: `SaveError`
[INFO] [stdout] running 5 tests
[INFO] [stderr]  --> src/countdown/countdown_serializer.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     SaveError(String),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/countdown.rs:230:9
[INFO] [stderr]     |
[INFO] [stderr] 230 |         ctr.add_timer(name, duration);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/countdown.rs:241:9
[INFO] [stderr]     |
[INFO] [stderr] 241 |         ctr.add_timer(name, duration);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/countdown.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |         ctr.cancel_timer(name);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/countdown.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |         ctr.add_timer(name, duration);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/countdown-11230d1c95197d46)
[INFO] [stdout] test countdown::tests::add_new_creates_a_new_countdown ... ok
[INFO] [stdout] test countdown::tests::count_down_returns_zero_if_past_time ... ok
[INFO] [stdout] test countdown::tests::display_prints_out_timers ... ok
[INFO] [stdout] test countdown::tests::count_down_calculates_correct_remaining_time ... ok
[INFO] [stdout] test countdown::tests::cancel_removes_created_countdown ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "577c6314f98b1bb54504b30a27cbc0a6f9e11ec1efddcf712d662dd54e52dbbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "577c6314f98b1bb54504b30a27cbc0a6f9e11ec1efddcf712d662dd54e52dbbc", kill_on_drop: false }`
[INFO] [stdout] 577c6314f98b1bb54504b30a27cbc0a6f9e11ec1efddcf712d662dd54e52dbbc