[INFO] fetching crate unwrap_helpers 0.3.0...
[INFO] checking unwrap_helpers-0.3.0 against master#b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd for pr-155501
[INFO] extracting crate unwrap_helpers 0.3.0 into /workspace/builds/worker-0-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate unwrap_helpers 0.3.0 on toolchain b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "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" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded loop_unwrap v0.2.0
[INFO] [stderr]   Downloaded unwrap_helpers_proc_macros v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca9b20c5afc99c24f1fd90e847ee4f57aa43205e2ad38781ef996e58f0121941
[INFO] running `Command { std: "docker" "start" "-a" "ca9b20c5afc99c24f1fd90e847ee4f57aa43205e2ad38781ef996e58f0121941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca9b20c5afc99c24f1fd90e847ee4f57aa43205e2ad38781ef996e58f0121941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca9b20c5afc99c24f1fd90e847ee4f57aa43205e2ad38781ef996e58f0121941", kill_on_drop: false }`
[INFO] [stdout] ca9b20c5afc99c24f1fd90e847ee4f57aa43205e2ad38781ef996e58f0121941
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3aed582f6d7311ab0c2aaba226a72b4e4bae39d91283f55cdbdef214b2bd1dc
[INFO] running `Command { std: "docker" "start" "-a" "b3aed582f6d7311ab0c2aaba226a72b4e4bae39d91283f55cdbdef214b2bd1dc", 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 7.21s
[INFO] running `Command { std: "docker" "inspect" "b3aed582f6d7311ab0c2aaba226a72b4e4bae39d91283f55cdbdef214b2bd1dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3aed582f6d7311ab0c2aaba226a72b4e4bae39d91283f55cdbdef214b2bd1dc", kill_on_drop: false }`
[INFO] [stdout] b3aed582f6d7311ab0c2aaba226a72b4e4bae39d91283f55cdbdef214b2bd1dc