[INFO] fetching crate acat 0.1.2...
[INFO] testing acat-0.1.2 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate acat 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate acat 0.1.2 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate acat 0.1.2
[INFO] finished tweaking crates.io crate acat 0.1.2
[INFO] tweaked toml for crates.io crate acat 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate acat 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded random_color v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b24e16efcb8ab3330ec579a4bf5c012a6aa6b042a0b21a5d58808d6b60c87e38
[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" "b24e16efcb8ab3330ec579a4bf5c012a6aa6b042a0b21a5d58808d6b60c87e38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b24e16efcb8ab3330ec579a4bf5c012a6aa6b042a0b21a5d58808d6b60c87e38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b24e16efcb8ab3330ec579a4bf5c012a6aa6b042a0b21a5d58808d6b60c87e38", kill_on_drop: false }`
[INFO] [stdout] b24e16efcb8ab3330ec579a4bf5c012a6aa6b042a0b21a5d58808d6b60c87e38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24c606a05b32cb5751e44efe2d5f417ce201b13c0750d0c957e7adae2e57b669
[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" "24c606a05b32cb5751e44efe2d5f417ce201b13c0750d0c957e7adae2e57b669", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling random_color v0.4.4
[INFO] [stderr]    Compiling acat v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `AppSettings`, `ArgGroup`, `SubCommand`
[INFO] [stdout]  --> src/clap_app.rs:2:63
[INFO] [stdout]   |
[INFO] [stdout] 2 |     crate_authors, crate_name, crate_version, App as ClapApp, AppSettings, Arg, ArgGroup,
[INFO] [stdout]   |                                                               ^^^^^^^^^^^       ^^^^^^^^
[INFO] [stdout] 3 |     SubCommand,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.30s
[INFO] running `Command { std: "docker" "inspect" "24c606a05b32cb5751e44efe2d5f417ce201b13c0750d0c957e7adae2e57b669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24c606a05b32cb5751e44efe2d5f417ce201b13c0750d0c957e7adae2e57b669", kill_on_drop: false }`
[INFO] [stdout] 24c606a05b32cb5751e44efe2d5f417ce201b13c0750d0c957e7adae2e57b669
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 870b18e8fe82435baf9230aeeaeb06d1f57f38ecfda2bae36d956a3744c0b048
[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" "870b18e8fe82435baf9230aeeaeb06d1f57f38ecfda2bae36d956a3744c0b048", kill_on_drop: false }`
[INFO] [stderr]    Compiling acat v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `AppSettings`, `ArgGroup`, `SubCommand`
[INFO] [stdout]  --> src/clap_app.rs:2:63
[INFO] [stdout]   |
[INFO] [stdout] 2 |     crate_authors, crate_name, crate_version, App as ClapApp, AppSettings, Arg, ArgGroup,
[INFO] [stdout]   |                                                               ^^^^^^^^^^^       ^^^^^^^^
[INFO] [stdout] 3 |     SubCommand,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "870b18e8fe82435baf9230aeeaeb06d1f57f38ecfda2bae36d956a3744c0b048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "870b18e8fe82435baf9230aeeaeb06d1f57f38ecfda2bae36d956a3744c0b048", kill_on_drop: false }`
[INFO] [stdout] 870b18e8fe82435baf9230aeeaeb06d1f57f38ecfda2bae36d956a3744c0b048
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dd994ac87f1862a51319003ead9b2e034b6a35d9a8b8cf8d45d44d4bfd8febb1
[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" "dd994ac87f1862a51319003ead9b2e034b6a35d9a8b8cf8d45d44d4bfd8febb1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused imports: `AppSettings`, `ArgGroup`, `SubCommand`
[INFO] [stderr]  --> src/clap_app.rs:2:63
[INFO] [stderr]   |
[INFO] [stderr] 2 |     crate_authors, crate_name, crate_version, App as ClapApp, AppSettings, Arg, ArgGroup,
[INFO] [stderr]   |                                                               ^^^^^^^^^^^       ^^^^^^^^
[INFO] [stderr] 3 |     SubCommand,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `acat` (bin "acat" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/acat-0ca6b224eb317624)
[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" "dd994ac87f1862a51319003ead9b2e034b6a35d9a8b8cf8d45d44d4bfd8febb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd994ac87f1862a51319003ead9b2e034b6a35d9a8b8cf8d45d44d4bfd8febb1", kill_on_drop: false }`
[INFO] [stdout] dd994ac87f1862a51319003ead9b2e034b6a35d9a8b8cf8d45d44d4bfd8febb1