[INFO] cloning repository https://github.com/HelveticaScenario/crash_course
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HelveticaScenario/crash_course" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHelveticaScenario%2Fcrash_course", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHelveticaScenario%2Fcrash_course'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cfdbec41075a468ecb57afe0b13e55f9e9291dd
[INFO] testing HelveticaScenario/crash_course against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHelveticaScenario%2Fcrash_course" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HelveticaScenario/crash_course 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/HelveticaScenario/crash_course
[INFO] finished tweaking git repo https://github.com/HelveticaScenario/crash_course
[INFO] tweaked toml for git repo https://github.com/HelveticaScenario/crash_course written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/HelveticaScenario/crash_course 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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] be23d014b49f9500ca47bad352ee29a83a12b90f9d82177c5e43a8f7aa7b7836
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "be23d014b49f9500ca47bad352ee29a83a12b90f9d82177c5e43a8f7aa7b7836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be23d014b49f9500ca47bad352ee29a83a12b90f9d82177c5e43a8f7aa7b7836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be23d014b49f9500ca47bad352ee29a83a12b90f9d82177c5e43a8f7aa7b7836", kill_on_drop: false }`
[INFO] [stdout] be23d014b49f9500ca47bad352ee29a83a12b90f9d82177c5e43a8f7aa7b7836
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 95c4a9f62533086b7c0ebf958fdfea4bd0d18b520760d66a439982cae1af0349
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "95c4a9f62533086b7c0ebf958fdfea4bd0d18b520760d66a439982cae1af0349", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.5.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling signal-hook-registry v1.2.2
[INFO] [stderr]    Compiling mio v0.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.8.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling signal-hook v0.1.16
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling crossterm v0.18.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling crash_course v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.96s
[INFO] running `Command { std: "docker" "inspect" "95c4a9f62533086b7c0ebf958fdfea4bd0d18b520760d66a439982cae1af0349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95c4a9f62533086b7c0ebf958fdfea4bd0d18b520760d66a439982cae1af0349", kill_on_drop: false }`
[INFO] [stdout] 95c4a9f62533086b7c0ebf958fdfea4bd0d18b520760d66a439982cae1af0349
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 43b603a1042fd203df3b2d06e7f7016323cd6be8f9dc8596624f45706b1f507b
[INFO] running `Command { std: "docker" "start" "-a" "43b603a1042fd203df3b2d06e7f7016323cd6be8f9dc8596624f45706b1f507b", kill_on_drop: false }`
[INFO] [stderr]    Compiling crash_course v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `thread`, `time::Duration`
[INFO] [stdout]  --> examples/sum3.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io, thread, time::Duration};
[INFO] [stdout]   |               ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "43b603a1042fd203df3b2d06e7f7016323cd6be8f9dc8596624f45706b1f507b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43b603a1042fd203df3b2d06e7f7016323cd6be8f9dc8596624f45706b1f507b", kill_on_drop: false }`
[INFO] [stdout] 43b603a1042fd203df3b2d06e7f7016323cd6be8f9dc8596624f45706b1f507b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9e57d1f69d99ef46c60db247437e38fb57f2b56d7f147ca4f1cc9318f17674aa
[INFO] running `Command { std: "docker" "start" "-a" "9e57d1f69d99ef46c60db247437e38fb57f2b56d7f147ca4f1cc9318f17674aa", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `thread`, `time::Duration`
[INFO] [stderr]  --> examples/sum3.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{io, thread, time::Duration};
[INFO] [stderr]   |               ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/crash_course-ab896979ae88f495)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9e57d1f69d99ef46c60db247437e38fb57f2b56d7f147ca4f1cc9318f17674aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e57d1f69d99ef46c60db247437e38fb57f2b56d7f147ca4f1cc9318f17674aa", kill_on_drop: false }`
[INFO] [stdout] 9e57d1f69d99ef46c60db247437e38fb57f2b56d7f147ca4f1cc9318f17674aa