[INFO] fetching crate serde-feature-hack 0.2.0...
[INFO] testing serde-feature-hack-0.2.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate serde-feature-hack 0.2.0 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate serde-feature-hack 0.2.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-feature-hack 0.2.0
[INFO] finished tweaking crates.io crate serde-feature-hack 0.2.0
[INFO] tweaked toml for crates.io crate serde-feature-hack 0.2.0 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b6da6d0f7fce7a0b733ed7a6dfbb21ee829a87cd8e1ba655ebd48183e7328a6
[INFO] running `Command { std: "docker" "start" "-a" "6b6da6d0f7fce7a0b733ed7a6dfbb21ee829a87cd8e1ba655ebd48183e7328a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b6da6d0f7fce7a0b733ed7a6dfbb21ee829a87cd8e1ba655ebd48183e7328a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b6da6d0f7fce7a0b733ed7a6dfbb21ee829a87cd8e1ba655ebd48183e7328a6", kill_on_drop: false }`
[INFO] [stdout] 6b6da6d0f7fce7a0b733ed7a6dfbb21ee829a87cd8e1ba655ebd48183e7328a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd19c8f35aa11a22fdfc5a32b88d20fc41289bd928ef99144074c7182fa68b2d
[INFO] running `Command { std: "docker" "start" "-a" "dd19c8f35aa11a22fdfc5a32b88d20fc41289bd928ef99144074c7182fa68b2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde-feature-hack v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.44s
[INFO] running `Command { std: "docker" "inspect" "dd19c8f35aa11a22fdfc5a32b88d20fc41289bd928ef99144074c7182fa68b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd19c8f35aa11a22fdfc5a32b88d20fc41289bd928ef99144074c7182fa68b2d", kill_on_drop: false }`
[INFO] [stdout] dd19c8f35aa11a22fdfc5a32b88d20fc41289bd928ef99144074c7182fa68b2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b03bd72a49fccafd030ab5f9fbde58935290f580b943664830c590adfe59976
[INFO] running `Command { std: "docker" "start" "-a" "9b03bd72a49fccafd030ab5f9fbde58935290f580b943664830c590adfe59976", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling serde-feature-hack v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.56s
[INFO] running `Command { std: "docker" "inspect" "9b03bd72a49fccafd030ab5f9fbde58935290f580b943664830c590adfe59976", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b03bd72a49fccafd030ab5f9fbde58935290f580b943664830c590adfe59976", kill_on_drop: false }`
[INFO] [stdout] 9b03bd72a49fccafd030ab5f9fbde58935290f580b943664830c590adfe59976
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5d820af4fc9c30d1c0813355b05fc7183be3cf22fbbf3f5a0efeb4ac300bed58
[INFO] running `Command { std: "docker" "start" "-a" "5d820af4fc9c30d1c0813355b05fc7183be3cf22fbbf3f5a0efeb4ac300bed58", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serde-cbef229f559c974a)
[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 serde
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.58s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5d820af4fc9c30d1c0813355b05fc7183be3cf22fbbf3f5a0efeb4ac300bed58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d820af4fc9c30d1c0813355b05fc7183be3cf22fbbf3f5a0efeb4ac300bed58", kill_on_drop: false }`
[INFO] [stdout] 5d820af4fc9c30d1c0813355b05fc7183be3cf22fbbf3f5a0efeb4ac300bed58