[INFO] fetching crate serde-detach 0.0.1...
[INFO] checking serde-detach-0.0.1 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate serde-detach 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate serde-detach 0.0.1 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-detach 0.0.1
[INFO] finished tweaking crates.io crate serde-detach 0.0.1
[INFO] tweaked toml for crates.io crate serde-detach 0.0.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded logos-derive v0.11.5
[INFO] [stderr]   Downloaded logos v0.11.4
[INFO] [stderr]   Downloaded serde-object v0.0.0-alpha.0
[INFO] [stderr]   Downloaded cervine v0.0.2
[INFO] [stderr]   Downloaded gnaw v0.0.1
[INFO] [stderr]   Downloaded debugless-unwrap v0.0.1
[INFO] [stderr]   Downloaded enum_properties v0.2.1
[INFO] [stderr]   Downloaded taml v0.0.1
[INFO] [stderr]   Downloaded lazy-transform-str v0.0.1
[INFO] [stderr]   Downloaded serde_taml v0.0.1
[INFO] [stderr]   Downloaded smartstring v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77266fc9fe5af5a976865c7460ad678532951d7eb689548eb5de123ba61b16d1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "77266fc9fe5af5a976865c7460ad678532951d7eb689548eb5de123ba61b16d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77266fc9fe5af5a976865c7460ad678532951d7eb689548eb5de123ba61b16d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77266fc9fe5af5a976865c7460ad678532951d7eb689548eb5de123ba61b16d1", kill_on_drop: false }`
[INFO] [stdout] 77266fc9fe5af5a976865c7460ad678532951d7eb689548eb5de123ba61b16d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 05fd2f588304323b2d36dd6975bbf16897d28279ce2ae3877bb1de7b41b5eeac
[INFO] running `Command { std: "docker" "start" "-a" "05fd2f588304323b2d36dd6975bbf16897d28279ce2ae3877bb1de7b41b5eeac", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]     Checking gnaw v0.0.1
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking cervine v0.0.2
[INFO] [stderr]     Checking enum_properties v0.2.1
[INFO] [stderr]     Checking debugless-unwrap v0.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking smartstring v0.2.6
[INFO] [stderr]     Checking lazy-transform-str v0.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling try_match_inner v0.2.0
[INFO] [stderr]    Compiling logos-derive v0.11.5
[INFO] [stderr]     Checking try_match v0.2.2
[INFO] [stderr]     Checking logos v0.11.4
[INFO] [stderr]     Checking taml v0.0.1
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking serde-object v0.0.0-alpha.0
[INFO] [stderr]     Checking serde_taml v0.0.1
[INFO] [stderr]     Checking serde-detach v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.41s
[INFO] running `Command { std: "docker" "inspect" "05fd2f588304323b2d36dd6975bbf16897d28279ce2ae3877bb1de7b41b5eeac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05fd2f588304323b2d36dd6975bbf16897d28279ce2ae3877bb1de7b41b5eeac", kill_on_drop: false }`
[INFO] [stdout] 05fd2f588304323b2d36dd6975bbf16897d28279ce2ae3877bb1de7b41b5eeac