[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 1.55.0 for beta-1.56-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHelveticaScenario%2Fcrash_course" "/workspace/builds/worker-74/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-74/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HelveticaScenario/crash_course on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-74/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bb6a29c5230d6f4c17479617a5aaf9870efbe14620703d14db842c0d73f52ea
[INFO] running `Command { std: "docker" "start" "-a" "0bb6a29c5230d6f4c17479617a5aaf9870efbe14620703d14db842c0d73f52ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bb6a29c5230d6f4c17479617a5aaf9870efbe14620703d14db842c0d73f52ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bb6a29c5230d6f4c17479617a5aaf9870efbe14620703d14db842c0d73f52ea", kill_on_drop: false }`
[INFO] [stdout] 0bb6a29c5230d6f4c17479617a5aaf9870efbe14620703d14db842c0d73f52ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] feedd733744cd9a515aa221ebce62f6ff799aef513e787406ff8b1ddf3640ed7
[INFO] running `Command { std: "docker" "start" "-a" "feedd733744cd9a515aa221ebce62f6ff799aef513e787406ff8b1ddf3640ed7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling smallvec v1.5.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling signal-hook-registry v1.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.1
[INFO] [stderr]    Compiling mio v0.7.6
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling signal-hook v0.1.16
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling crossterm v0.18.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[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 39.90s
[INFO] running `Command { std: "docker" "inspect" "feedd733744cd9a515aa221ebce62f6ff799aef513e787406ff8b1ddf3640ed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feedd733744cd9a515aa221ebce62f6ff799aef513e787406ff8b1ddf3640ed7", kill_on_drop: false }`
[INFO] [stdout] feedd733744cd9a515aa221ebce62f6ff799aef513e787406ff8b1ddf3640ed7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd87388c4fd2ad923b40934c54a4d5b58530d116b5fb333a99dd9d4bddf1f6c3
[INFO] running `Command { std: "docker" "start" "-a" "cd87388c4fd2ad923b40934c54a4d5b58530d116b5fb333a99dd9d4bddf1f6c3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 3.76s
[INFO] running `Command { std: "docker" "inspect" "cd87388c4fd2ad923b40934c54a4d5b58530d116b5fb333a99dd9d4bddf1f6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd87388c4fd2ad923b40934c54a4d5b58530d116b5fb333a99dd9d4bddf1f6c3", kill_on_drop: false }`
[INFO] [stdout] cd87388c4fd2ad923b40934c54a4d5b58530d116b5fb333a99dd9d4bddf1f6c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a29be41bb2aa9faf795c83648dc48acc471346841310359cbcbf64a7897e70f0
[INFO] running `Command { std: "docker" "start" "-a" "a29be41bb2aa9faf795c83648dc48acc471346841310359cbcbf64a7897e70f0", 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: `crash_course` (example "sum3") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/crash_course-83279e6647dac6f2)
[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" "a29be41bb2aa9faf795c83648dc48acc471346841310359cbcbf64a7897e70f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a29be41bb2aa9faf795c83648dc48acc471346841310359cbcbf64a7897e70f0", kill_on_drop: false }`
[INFO] [stdout] a29be41bb2aa9faf795c83648dc48acc471346841310359cbcbf64a7897e70f0