[INFO] fetching crate unwrap_helpers 0.3.0...
[INFO] checking unwrap_helpers-0.3.0 against try#1c4199da70f816f2239f41c55168ff75a3663718 for pr-155499
[INFO] extracting crate unwrap_helpers 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate unwrap_helpers 0.3.0
[INFO] finished tweaking crates.io crate unwrap_helpers 0.3.0
[INFO] tweaked toml for crates.io crate unwrap_helpers 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unwrap_helpers 0.3.0 on toolchain 1c4199da70f816f2239f41c55168ff75a3663718
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1c4199da70f816f2239f41c55168ff75a3663718" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1c4199da70f816f2239f41c55168ff75a3663718" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1c4199da70f816f2239f41c55168ff75a3663718" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1c4199da70f816f2239f41c55168ff75a3663718" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98c92df80b33d89feab580856ded8d9002f12616be3eb0ce363b227d6778264b
[INFO] running `Command { std: "docker" "start" "-a" "98c92df80b33d89feab580856ded8d9002f12616be3eb0ce363b227d6778264b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98c92df80b33d89feab580856ded8d9002f12616be3eb0ce363b227d6778264b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98c92df80b33d89feab580856ded8d9002f12616be3eb0ce363b227d6778264b", kill_on_drop: false }`
[INFO] [stdout] 98c92df80b33d89feab580856ded8d9002f12616be3eb0ce363b227d6778264b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1c4199da70f816f2239f41c55168ff75a3663718" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7457be18ed9b0ed691cb88d500a7c994b00ad0600781f1a8ec1b35a8ef0ecad6
[INFO] running `Command { std: "docker" "start" "-a" "7457be18ed9b0ed691cb88d500a7c994b00ad0600781f1a8ec1b35a8ef0ecad6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking loop_unwrap v0.2.0
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling unwrap_helpers_proc_macros v0.1.1
[INFO] [stderr]     Checking unwrap_helpers v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.08s
[INFO] running `Command { std: "docker" "inspect" "7457be18ed9b0ed691cb88d500a7c994b00ad0600781f1a8ec1b35a8ef0ecad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7457be18ed9b0ed691cb88d500a7c994b00ad0600781f1a8ec1b35a8ef0ecad6", kill_on_drop: false }`
[INFO] [stdout] 7457be18ed9b0ed691cb88d500a7c994b00ad0600781f1a8ec1b35a8ef0ecad6