[INFO] fetching crate impc 0.2.2...
[INFO] checking impc-0.2.2 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate impc 0.2.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate impc 0.2.2 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate impc 0.2.2
[INFO] finished tweaking crates.io crate impc 0.2.2
[INFO] tweaked toml for crates.io crate impc 0.2.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate impc 0.2.2 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.97
[INFO] [stderr]   Downloaded argh_shared v0.1.12
[INFO] [stderr]   Downloaded proc-macro2 v1.0.82
[INFO] [stderr]   Downloaded argh_derive v0.1.12
[INFO] [stderr]   Downloaded argh v0.1.12
[INFO] [stderr]   Downloaded anyhow v1.0.83
[INFO] [stderr]   Downloaded serde_derive v1.0.201
[INFO] [stderr]   Downloaded serde v1.0.201
[INFO] [stderr]   Downloaded thiserror-impl v1.0.60
[INFO] [stderr]   Downloaded thiserror v1.0.60
[INFO] [stderr]   Downloaded syn v2.0.61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66b44a03d8eaed313913401a5a4fabb83dd6895a212a8107bca4d7736626ad6d
[INFO] running `Command { std: "docker" "start" "-a" "66b44a03d8eaed313913401a5a4fabb83dd6895a212a8107bca4d7736626ad6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66b44a03d8eaed313913401a5a4fabb83dd6895a212a8107bca4d7736626ad6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66b44a03d8eaed313913401a5a4fabb83dd6895a212a8107bca4d7736626ad6d", kill_on_drop: false }`
[INFO] [stdout] 66b44a03d8eaed313913401a5a4fabb83dd6895a212a8107bca4d7736626ad6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2b63726f2042f10700e1bf546b5ea1a5b717df3de0596140e3487d6fa66b747
[INFO] running `Command { std: "docker" "start" "-a" "b2b63726f2042f10700e1bf546b5ea1a5b717df3de0596140e3487d6fa66b747", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling cc v1.0.97
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]    Compiling anyhow v1.0.83
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking indent_write v2.2.0
[INFO] [stderr]     Checking joinery v2.1.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking brownstone v3.0.0
[INFO] [stderr]     Checking num-bigint v0.4.5
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.61
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking nom-supreme v0.8.0
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling serde_derive v1.0.201
[INFO] [stderr]    Compiling thiserror-impl v1.0.60
[INFO] [stderr]     Checking better-panic v0.3.0
[INFO] [stderr]     Checking argh_shared v0.1.12
[INFO] [stderr]    Compiling argh_derive v0.1.12
[INFO] [stderr]     Checking argh v0.1.12
[INFO] [stderr]     Checking impc v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.37s
[INFO] running `Command { std: "docker" "inspect" "b2b63726f2042f10700e1bf546b5ea1a5b717df3de0596140e3487d6fa66b747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2b63726f2042f10700e1bf546b5ea1a5b717df3de0596140e3487d6fa66b747", kill_on_drop: false }`
[INFO] [stdout] b2b63726f2042f10700e1bf546b5ea1a5b717df3de0596140e3487d6fa66b747