[INFO] fetching crate sigchld 0.2.4...
[INFO] building sigchld-0.2.4 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate sigchld 0.2.4 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate sigchld 0.2.4
[INFO] finished tweaking crates.io crate sigchld 0.2.4
[INFO] tweaked toml for crates.io crate sigchld 0.2.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sigchld 0.2.4 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sigchld 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb86cef0533daf92d09abcc4e181ecd5357da1034320b0b84097b39982369b6e
[INFO] running `Command { std: "docker" "start" "-a" "cb86cef0533daf92d09abcc4e181ecd5357da1034320b0b84097b39982369b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb86cef0533daf92d09abcc4e181ecd5357da1034320b0b84097b39982369b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb86cef0533daf92d09abcc4e181ecd5357da1034320b0b84097b39982369b6e", kill_on_drop: false }`
[INFO] [stdout] cb86cef0533daf92d09abcc4e181ecd5357da1034320b0b84097b39982369b6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fc61590bc5bc2755f8bceb8bb25edb08e31db1b55c5316775fe9c3ac9fec2e7
[INFO] running `Command { std: "docker" "start" "-a" "4fc61590bc5bc2755f8bceb8bb25edb08e31db1b55c5316775fe9c3ac9fec2e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling os_pipe v1.2.2
[INFO] [stderr]    Compiling sigchld v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "4fc61590bc5bc2755f8bceb8bb25edb08e31db1b55c5316775fe9c3ac9fec2e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fc61590bc5bc2755f8bceb8bb25edb08e31db1b55c5316775fe9c3ac9fec2e7", kill_on_drop: false }`
[INFO] [stdout] 4fc61590bc5bc2755f8bceb8bb25edb08e31db1b55c5316775fe9c3ac9fec2e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04d3440a50cdc13d3416b51115f26a3d85baef5bd02458ef17a9e2d1377d90ac
[INFO] running `Command { std: "docker" "start" "-a" "04d3440a50cdc13d3416b51115f26a3d85baef5bd02458ef17a9e2d1377d90ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling shared_thread v0.1.0
[INFO] [stderr]    Compiling sigchld v0.2.3
[INFO] [stderr]    Compiling shared_child v1.1.1
[INFO] [stderr]    Compiling duct v1.0.0
[INFO] [stderr]    Compiling sigchld v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.04s
[INFO] running `Command { std: "docker" "inspect" "04d3440a50cdc13d3416b51115f26a3d85baef5bd02458ef17a9e2d1377d90ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d3440a50cdc13d3416b51115f26a3d85baef5bd02458ef17a9e2d1377d90ac", kill_on_drop: false }`
[INFO] [stdout] 04d3440a50cdc13d3416b51115f26a3d85baef5bd02458ef17a9e2d1377d90ac