[INFO] fetching crate slog-json 2.6.0...
[INFO] testing slog-json-2.6.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate slog-json 2.6.0 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate slog-json 2.6.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog-json 2.6.0
[INFO] finished tweaking crates.io crate slog-json 2.6.0
[INFO] tweaked toml for crates.io crate slog-json 2.6.0 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate slog-json 2.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e56226457f333dcc128d2be2ffc63ded7c650894773605c38e3dac083683cf3d
[INFO] running `Command { std: "docker" "start" "-a" "e56226457f333dcc128d2be2ffc63ded7c650894773605c38e3dac083683cf3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e56226457f333dcc128d2be2ffc63ded7c650894773605c38e3dac083683cf3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e56226457f333dcc128d2be2ffc63ded7c650894773605c38e3dac083683cf3d", kill_on_drop: false }`
[INFO] [stdout] e56226457f333dcc128d2be2ffc63ded7c650894773605c38e3dac083683cf3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caaf98de8b1a66103538c95c69bd36d57285c4edfbb8424c63d31852fb2f04a5
[INFO] running `Command { std: "docker" "start" "-a" "caaf98de8b1a66103538c95c69bd36d57285c4edfbb8424c63d31852fb2f04a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling num_threads v0.1.3
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling time v0.3.7
[INFO] [stderr]    Compiling slog-json v2.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "caaf98de8b1a66103538c95c69bd36d57285c4edfbb8424c63d31852fb2f04a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caaf98de8b1a66103538c95c69bd36d57285c4edfbb8424c63d31852fb2f04a5", kill_on_drop: false }`
[INFO] [stdout] caaf98de8b1a66103538c95c69bd36d57285c4edfbb8424c63d31852fb2f04a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fe3b1a203aa1736a5e8b6d40da862b25d1124c4dd65f84d8a83bc10ef55d4c1
[INFO] running `Command { std: "docker" "start" "-a" "4fe3b1a203aa1736a5e8b6d40da862b25d1124c4dd65f84d8a83bc10ef55d4c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling slog-async v2.7.0
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling slog-json v2.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `Command { std: "docker" "inspect" "4fe3b1a203aa1736a5e8b6d40da862b25d1124c4dd65f84d8a83bc10ef55d4c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fe3b1a203aa1736a5e8b6d40da862b25d1124c4dd65f84d8a83bc10ef55d4c1", kill_on_drop: false }`
[INFO] [stdout] 4fe3b1a203aa1736a5e8b6d40da862b25d1124c4dd65f84d8a83bc10ef55d4c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7b9965aeeeeec06c7438291d784bc9197f3ec06e4fbfb97fd9eaf9fe76752d49
[INFO] running `Command { std: "docker" "start" "-a" "7b9965aeeeeec06c7438291d784bc9197f3ec06e4fbfb97fd9eaf9fe76752d49", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slog_json-d3976f1d5dad15c8)
[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] [stderr]    Doc-tests slog-json
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.69s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7b9965aeeeeec06c7438291d784bc9197f3ec06e4fbfb97fd9eaf9fe76752d49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b9965aeeeeec06c7438291d784bc9197f3ec06e4fbfb97fd9eaf9fe76752d49", kill_on_drop: false }`
[INFO] [stdout] 7b9965aeeeeec06c7438291d784bc9197f3ec06e4fbfb97fd9eaf9fe76752d49