[INFO] fetching crate js_option 0.1.0...
[INFO] testing js_option-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate js_option 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate js_option 0.1.0 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 crates.io crate js_option 0.1.0
[INFO] finished tweaking crates.io crate js_option 0.1.0
[INFO] tweaked toml for crates.io crate js_option 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aff556d408bcaf3ccb6a043b484a5f3db4ed2cdb4c571512dfa26c35e6f9b21
[INFO] running `Command { std: "docker" "start" "-a" "6aff556d408bcaf3ccb6a043b484a5f3db4ed2cdb4c571512dfa26c35e6f9b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aff556d408bcaf3ccb6a043b484a5f3db4ed2cdb4c571512dfa26c35e6f9b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aff556d408bcaf3ccb6a043b484a5f3db4ed2cdb4c571512dfa26c35e6f9b21", kill_on_drop: false }`
[INFO] [stdout] 6aff556d408bcaf3ccb6a043b484a5f3db4ed2cdb4c571512dfa26c35e6f9b21
[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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37962837ef3572de0824e8cc433d914604e5ceeedfbac0c6e76a3804dd138208
[INFO] running `Command { std: "docker" "start" "-a" "37962837ef3572de0824e8cc433d914604e5ceeedfbac0c6e76a3804dd138208", kill_on_drop: false }`
[INFO] [stderr]    Compiling js_option v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "37962837ef3572de0824e8cc433d914604e5ceeedfbac0c6e76a3804dd138208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37962837ef3572de0824e8cc433d914604e5ceeedfbac0c6e76a3804dd138208", kill_on_drop: false }`
[INFO] [stdout] 37962837ef3572de0824e8cc433d914604e5ceeedfbac0c6e76a3804dd138208
[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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 747cf324abf3398db973b984204dad19c5660d76e01a435ace2522c9c4ac2f4f
[INFO] running `Command { std: "docker" "start" "-a" "747cf324abf3398db973b984204dad19c5660d76e01a435ace2522c9c4ac2f4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling js_option v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `Command { std: "docker" "inspect" "747cf324abf3398db973b984204dad19c5660d76e01a435ace2522c9c4ac2f4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "747cf324abf3398db973b984204dad19c5660d76e01a435ace2522c9c4ac2f4f", kill_on_drop: false }`
[INFO] [stdout] 747cf324abf3398db973b984204dad19c5660d76e01a435ace2522c9c4ac2f4f
[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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d7ec0406ac7740034cdf481f58f0cf97e7d30d3a71374ffa1205ebb58e3d4a4b
[INFO] running `Command { std: "docker" "start" "-a" "d7ec0406ac7740034cdf481f58f0cf97e7d30d3a71374ffa1205ebb58e3d4a4b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/js_option-49686994e7894c4f)
[INFO] [stderr]    Doc-tests js_option
[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] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.50s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d7ec0406ac7740034cdf481f58f0cf97e7d30d3a71374ffa1205ebb58e3d4a4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7ec0406ac7740034cdf481f58f0cf97e7d30d3a71374ffa1205ebb58e3d4a4b", kill_on_drop: false }`
[INFO] [stdout] d7ec0406ac7740034cdf481f58f0cf97e7d30d3a71374ffa1205ebb58e3d4a4b