[INFO] fetching crate spinoff 0.5.3...
[INFO] checking spinoff-0.5.3 against try#e3fba958e26aa56a364ba6d36376f1800cd40fa5 for pr-101437
[INFO] extracting crate spinoff 0.5.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate spinoff 0.5.3 on toolchain e3fba958e26aa56a364ba6d36376f1800cd40fa5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spinoff 0.5.3
[INFO] finished tweaking crates.io crate spinoff 0.5.3
[INFO] tweaked toml for crates.io crate spinoff 0.5.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate spinoff 0.5.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3515fa4de534cc613d7758a977872032c578c0f1ac49624fa1e0da0bf4c5666f
[INFO] running `Command { std: "docker" "start" "-a" "3515fa4de534cc613d7758a977872032c578c0f1ac49624fa1e0da0bf4c5666f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3515fa4de534cc613d7758a977872032c578c0f1ac49624fa1e0da0bf4c5666f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3515fa4de534cc613d7758a977872032c578c0f1ac49624fa1e0da0bf4c5666f", kill_on_drop: false }`
[INFO] [stdout] 3515fa4de534cc613d7758a977872032c578c0f1ac49624fa1e0da0bf4c5666f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 636e1b953e3f27da7a2695e6158890ee903a15e093c69da13f4bf3c2c5a31c96
[INFO] running `Command { std: "docker" "start" "-a" "636e1b953e3f27da7a2695e6158890ee903a15e093c69da13f4bf3c2c5a31c96", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling rustversion v1.0.8
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr] error: failed to run custom build command for `rustversion v1.0.8`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustversion-ae7edf3fc216d569/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: unexpected output from `rustc --version`: ""
[INFO] [stderr] 
[INFO] [stderr]   Please file an issue in https://github.com/dtolnay/rustversion
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "636e1b953e3f27da7a2695e6158890ee903a15e093c69da13f4bf3c2c5a31c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "636e1b953e3f27da7a2695e6158890ee903a15e093c69da13f4bf3c2c5a31c96", kill_on_drop: false }`
[INFO] [stdout] 636e1b953e3f27da7a2695e6158890ee903a15e093c69da13f4bf3c2c5a31c96