[INFO] fetching crate concourse-api 0.0.1...
[INFO] testing concourse-api-0.0.1 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate concourse-api 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate concourse-api 0.0.1
[INFO] finished tweaking crates.io crate concourse-api 0.0.1
[INFO] tweaked toml for crates.io crate concourse-api 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate concourse-api 0.0.1 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.11.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7546768b3a5cb0a8cab70dd1f698d93036b5a012cb95b780df265e10fd7c54e
[INFO] running `Command { std: "docker" "start" "-a" "e7546768b3a5cb0a8cab70dd1f698d93036b5a012cb95b780df265e10fd7c54e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7546768b3a5cb0a8cab70dd1f698d93036b5a012cb95b780df265e10fd7c54e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7546768b3a5cb0a8cab70dd1f698d93036b5a012cb95b780df265e10fd7c54e", kill_on_drop: false }`
[INFO] [stdout] e7546768b3a5cb0a8cab70dd1f698d93036b5a012cb95b780df265e10fd7c54e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 387bbfad533a1267605b4066638d022fc2ebd37786e20e0cf4b8d6b2b60e5251
[INFO] running `Command { std: "docker" "start" "-a" "387bbfad533a1267605b4066638d022fc2ebd37786e20e0cf4b8d6b2b60e5251", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling stfu8 v0.2.7
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling located_yaml v0.2.1
[INFO] [stderr]    Compiling regex v1.11.2
[INFO] [stderr]    Compiling voca_rs v1.15.2
[INFO] [stderr]    Compiling concourse-api v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `concourse-api v0.0.1 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/concourse-api-75243e25a87641a6/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] running `Command { std: "docker" "inspect" "387bbfad533a1267605b4066638d022fc2ebd37786e20e0cf4b8d6b2b60e5251", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "387bbfad533a1267605b4066638d022fc2ebd37786e20e0cf4b8d6b2b60e5251", kill_on_drop: false }`
[INFO] [stdout] 387bbfad533a1267605b4066638d022fc2ebd37786e20e0cf4b8d6b2b60e5251