[INFO] fetching crate backtracer_core 0.0.4...
[INFO] checking backtracer_core-0.0.4 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate backtracer_core 0.0.4 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate backtracer_core 0.0.4 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backtracer_core 0.0.4
[INFO] finished tweaking crates.io crate backtracer_core 0.0.4
[INFO] tweaked toml for crates.io crate backtracer_core 0.0.4 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded x86 v0.37.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6c37abb58739ae97196ea7b2c48ca9e41b4776648d9103435995bb4019bd62b
[INFO] running `Command { std: "docker" "start" "-a" "e6c37abb58739ae97196ea7b2c48ca9e41b4776648d9103435995bb4019bd62b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6c37abb58739ae97196ea7b2c48ca9e41b4776648d9103435995bb4019bd62b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6c37abb58739ae97196ea7b2c48ca9e41b4776648d9103435995bb4019bd62b", kill_on_drop: false }`
[INFO] [stdout] e6c37abb58739ae97196ea7b2c48ca9e41b4776648d9103435995bb4019bd62b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8878e3a89fcf0c8a1cab913cfdb5ca186f0b5aded8bc9f0c0560bd2d72820908
[INFO] running `Command { std: "docker" "start" "-a" "8878e3a89fcf0c8a1cab913cfdb5ca186f0b5aded8bc9f0c0560bd2d72820908", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling x86 v0.37.0
[INFO] [stderr]     Checking bitflags v1.3.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking raw-cpuid v9.1.1
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]     Checking backtracer_core v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.84s
[INFO] running `Command { std: "docker" "inspect" "8878e3a89fcf0c8a1cab913cfdb5ca186f0b5aded8bc9f0c0560bd2d72820908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8878e3a89fcf0c8a1cab913cfdb5ca186f0b5aded8bc9f0c0560bd2d72820908", kill_on_drop: false }`
[INFO] [stdout] 8878e3a89fcf0c8a1cab913cfdb5ca186f0b5aded8bc9f0c0560bd2d72820908