[INFO] fetching crate unwrap_helpers 0.3.0...
[INFO] checking unwrap_helpers-0.3.0 against try#5ec4d3b0c83717313176eefa7d71e9d36dc83355 for pr-155501
[INFO] extracting crate unwrap_helpers 0.3.0 into /workspace/builds/worker-0-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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unwrap_helpers 0.3.0 on toolchain 5ec4d3b0c83717313176eefa7d71e9d36dc83355
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f84407b705a92eb01fadaeff7ddae97571592961f9aacd76f16dc5bf1b3d921e
[INFO] running `Command { std: "docker" "start" "-a" "f84407b705a92eb01fadaeff7ddae97571592961f9aacd76f16dc5bf1b3d921e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f84407b705a92eb01fadaeff7ddae97571592961f9aacd76f16dc5bf1b3d921e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f84407b705a92eb01fadaeff7ddae97571592961f9aacd76f16dc5bf1b3d921e", kill_on_drop: false }`
[INFO] [stdout] f84407b705a92eb01fadaeff7ddae97571592961f9aacd76f16dc5bf1b3d921e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1dce5be8962246c3e402806e3cc0002db19536b627df710f7d2112ee1cf00cfd
[INFO] running `Command { std: "docker" "start" "-a" "1dce5be8962246c3e402806e3cc0002db19536b627df710f7d2112ee1cf00cfd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking loop_unwrap v0.2.0
[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 7.03s
[INFO] running `Command { std: "docker" "inspect" "1dce5be8962246c3e402806e3cc0002db19536b627df710f7d2112ee1cf00cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dce5be8962246c3e402806e3cc0002db19536b627df710f7d2112ee1cf00cfd", kill_on_drop: false }`
[INFO] [stdout] 1dce5be8962246c3e402806e3cc0002db19536b627df710f7d2112ee1cf00cfd