[INFO] fetching crate slog-json 2.6.0...
[INFO] testing slog-json-2.6.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate slog-json 2.6.0 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate slog-json 2.6.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-26/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" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4155aec30938d56c9667c8c3c874e41a6e1ed0edaeca2fd0b0505fd6c8d67f5
[INFO] running `Command { std: "docker" "start" "-a" "c4155aec30938d56c9667c8c3c874e41a6e1ed0edaeca2fd0b0505fd6c8d67f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4155aec30938d56c9667c8c3c874e41a6e1ed0edaeca2fd0b0505fd6c8d67f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4155aec30938d56c9667c8c3c874e41a6e1ed0edaeca2fd0b0505fd6c8d67f5", kill_on_drop: false }`
[INFO] [stdout] c4155aec30938d56c9667c8c3c874e41a6e1ed0edaeca2fd0b0505fd6c8d67f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ab78e8c3426836664b01be298f2e04584abb312f9bcad05634fa830e91d81f5
[INFO] running `Command { std: "docker" "start" "-a" "8ab78e8c3426836664b01be298f2e04584abb312f9bcad05634fa830e91d81f5", kill_on_drop: false }`
[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 2.77s
[INFO] running `Command { std: "docker" "inspect" "8ab78e8c3426836664b01be298f2e04584abb312f9bcad05634fa830e91d81f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab78e8c3426836664b01be298f2e04584abb312f9bcad05634fa830e91d81f5", kill_on_drop: false }`
[INFO] [stdout] 8ab78e8c3426836664b01be298f2e04584abb312f9bcad05634fa830e91d81f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 349e1a1b114d373a750a9037810e9a83161e25c941c352a45aa6ecf39f34cb67
[INFO] running `Command { std: "docker" "start" "-a" "349e1a1b114d373a750a9037810e9a83161e25c941c352a45aa6ecf39f34cb67", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling slog-async v2.7.0
[INFO] [stderr]    Compiling slog-json v2.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `Command { std: "docker" "inspect" "349e1a1b114d373a750a9037810e9a83161e25c941c352a45aa6ecf39f34cb67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "349e1a1b114d373a750a9037810e9a83161e25c941c352a45aa6ecf39f34cb67", kill_on_drop: false }`
[INFO] [stdout] 349e1a1b114d373a750a9037810e9a83161e25c941c352a45aa6ecf39f34cb67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0c0143e731c5031b4cb8ceb9a6b3f4b714d7292c18daa7358c0bec8948955742
[INFO] running `Command { std: "docker" "start" "-a" "0c0143e731c5031b4cb8ceb9a6b3f4b714d7292c18daa7358c0bec8948955742", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slog_json-5ad7935b74f4a51d)
[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 0.77s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0c0143e731c5031b4cb8ceb9a6b3f4b714d7292c18daa7358c0bec8948955742", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c0143e731c5031b4cb8ceb9a6b3f4b714d7292c18daa7358c0bec8948955742", kill_on_drop: false }`
[INFO] [stdout] 0c0143e731c5031b4cb8ceb9a6b3f4b714d7292c18daa7358c0bec8948955742