[INFO] fetching crate purr 0.9.0...
[INFO] checking purr-0.9.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate purr 0.9.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate purr 0.9.0 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate purr 0.9.0
[INFO] finished tweaking crates.io crate purr 0.9.0
[INFO] tweaked toml for crates.io crate purr 0.9.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8070ae6e928b4e7a27becb9377da0d2ac908b02f206294f08779d3c4d3db107
[INFO] running `Command { std: "docker" "start" "-a" "e8070ae6e928b4e7a27becb9377da0d2ac908b02f206294f08779d3c4d3db107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8070ae6e928b4e7a27becb9377da0d2ac908b02f206294f08779d3c4d3db107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8070ae6e928b4e7a27becb9377da0d2ac908b02f206294f08779d3c4d3db107", kill_on_drop: false }`
[INFO] [stdout] e8070ae6e928b4e7a27becb9377da0d2ac908b02f206294f08779d3c4d3db107
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcfa02247b151458bc71f5da2f03f438f09ffe280ff910b66d9921f6b14d7120
[INFO] running `Command { std: "docker" "start" "-a" "bcfa02247b151458bc71f5da2f03f438f09ffe280ff910b66d9921f6b14d7120", kill_on_drop: false }`
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking purr v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "bcfa02247b151458bc71f5da2f03f438f09ffe280ff910b66d9921f6b14d7120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcfa02247b151458bc71f5da2f03f438f09ffe280ff910b66d9921f6b14d7120", kill_on_drop: false }`
[INFO] [stdout] bcfa02247b151458bc71f5da2f03f438f09ffe280ff910b66d9921f6b14d7120