[INFO] fetching crate rustkernel 0.0.21...
[INFO] testing rustkernel-0.0.21 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate rustkernel 0.0.21 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rustkernel 0.0.21 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustkernel 0.0.21
[INFO] finished tweaking crates.io crate rustkernel 0.0.21
[INFO] tweaked toml for crates.io crate rustkernel 0.0.21 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rustkernel 0.0.21 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a637115607302451a4eed29e6af118c6a04541afe76df3f8bc49bd45c773f71
[INFO] running `Command { std: "docker" "start" "-a" "8a637115607302451a4eed29e6af118c6a04541afe76df3f8bc49bd45c773f71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a637115607302451a4eed29e6af118c6a04541afe76df3f8bc49bd45c773f71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a637115607302451a4eed29e6af118c6a04541afe76df3f8bc49bd45c773f71", kill_on_drop: false }`
[INFO] [stdout] 8a637115607302451a4eed29e6af118c6a04541afe76df3f8bc49bd45c773f71
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb4a58d5c723d89a6599bf6f4ea3264f5ffbd8ca71e6ddd817f8d4e34b7b2af8
[INFO] running `Command { std: "docker" "start" "-a" "bb4a58d5c723d89a6599bf6f4ea3264f5ffbd8ca71e6ddd817f8d4e34b7b2af8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustkernel v0.0.21 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "bb4a58d5c723d89a6599bf6f4ea3264f5ffbd8ca71e6ddd817f8d4e34b7b2af8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb4a58d5c723d89a6599bf6f4ea3264f5ffbd8ca71e6ddd817f8d4e34b7b2af8", kill_on_drop: false }`
[INFO] [stdout] bb4a58d5c723d89a6599bf6f4ea3264f5ffbd8ca71e6ddd817f8d4e34b7b2af8
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72c9d25fd87c631f3a691154b52beff1457a94967bc8cb0e23cd931eec656388
[INFO] running `Command { std: "docker" "start" "-a" "72c9d25fd87c631f3a691154b52beff1457a94967bc8cb0e23cd931eec656388", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustkernel v0.0.21 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.36s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustkernel-6fa957337300fef6)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rustkernel-93defcefc61c26ab)
[INFO] running `Command { std: "docker" "inspect" "72c9d25fd87c631f3a691154b52beff1457a94967bc8cb0e23cd931eec656388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72c9d25fd87c631f3a691154b52beff1457a94967bc8cb0e23cd931eec656388", kill_on_drop: false }`
[INFO] [stdout] 72c9d25fd87c631f3a691154b52beff1457a94967bc8cb0e23cd931eec656388
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4387a6791a98dba052ef44f5216ef7a421d4b1afaf2b0066e53ea22ceed927af
[INFO] running `Command { std: "docker" "start" "-a" "4387a6791a98dba052ef44f5216ef7a421d4b1afaf2b0066e53ea22ceed927af", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustkernel-6fa957337300fef6)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustkernel-93defcefc61c26ab)
[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] [stdout] 
[INFO] [stderr]    Doc-tests rustkernel
[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] [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" "4387a6791a98dba052ef44f5216ef7a421d4b1afaf2b0066e53ea22ceed927af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4387a6791a98dba052ef44f5216ef7a421d4b1afaf2b0066e53ea22ceed927af", kill_on_drop: false }`
[INFO] [stdout] 4387a6791a98dba052ef44f5216ef7a421d4b1afaf2b0066e53ea22ceed927af