[INFO] fetching crate interface 0.0.1...
[INFO] testing interface-0.0.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate interface 0.0.1 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate interface 0.0.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate interface 0.0.1
[INFO] finished tweaking crates.io crate interface 0.0.1
[INFO] tweaked toml for crates.io crate interface 0.0.1 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cc3c92f25057a467d03696c52fd1986f320e06712229a485503dddad1965dbb
[INFO] running `Command { std: "docker" "start" "-a" "0cc3c92f25057a467d03696c52fd1986f320e06712229a485503dddad1965dbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cc3c92f25057a467d03696c52fd1986f320e06712229a485503dddad1965dbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc3c92f25057a467d03696c52fd1986f320e06712229a485503dddad1965dbb", kill_on_drop: false }`
[INFO] [stdout] 0cc3c92f25057a467d03696c52fd1986f320e06712229a485503dddad1965dbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 931071e9b1388883f3bb77e6b337e084cb3bb02cbdb2d0de7fdaa50a0abf5fe3
[INFO] running `Command { std: "docker" "start" "-a" "931071e9b1388883f3bb77e6b337e084cb3bb02cbdb2d0de7fdaa50a0abf5fe3", kill_on_drop: false }`
[INFO] [stderr]    Compiling interface v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "931071e9b1388883f3bb77e6b337e084cb3bb02cbdb2d0de7fdaa50a0abf5fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "931071e9b1388883f3bb77e6b337e084cb3bb02cbdb2d0de7fdaa50a0abf5fe3", kill_on_drop: false }`
[INFO] [stdout] 931071e9b1388883f3bb77e6b337e084cb3bb02cbdb2d0de7fdaa50a0abf5fe3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e75cfcae6bdcba56b8c862791bc33128c228746aa076ac778217364d5e90f9c2
[INFO] running `Command { std: "docker" "start" "-a" "e75cfcae6bdcba56b8c862791bc33128c228746aa076ac778217364d5e90f9c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling interface v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "e75cfcae6bdcba56b8c862791bc33128c228746aa076ac778217364d5e90f9c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e75cfcae6bdcba56b8c862791bc33128c228746aa076ac778217364d5e90f9c2", kill_on_drop: false }`
[INFO] [stdout] e75cfcae6bdcba56b8c862791bc33128c228746aa076ac778217364d5e90f9c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 69dcd5086f2479022a841f7bf4b7c4daa6d7bc288e781f51f5a63d8087ae9a72
[INFO] running `Command { std: "docker" "start" "-a" "69dcd5086f2479022a841f7bf4b7c4daa6d7bc288e781f51f5a63d8087ae9a72", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.38s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/interface-a609a52b4c175515)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests interface
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "69dcd5086f2479022a841f7bf4b7c4daa6d7bc288e781f51f5a63d8087ae9a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69dcd5086f2479022a841f7bf4b7c4daa6d7bc288e781f51f5a63d8087ae9a72", kill_on_drop: false }`
[INFO] [stdout] 69dcd5086f2479022a841f7bf4b7c4daa6d7bc288e781f51f5a63d8087ae9a72