[INFO] fetching crate write-json 0.1.4...
[INFO] testing write-json-0.1.4 against try#a7ee93192a766fb0dafa23def7154fc03cfcfc3e for pr-146989
[INFO] extracting crate write-json 0.1.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate write-json 0.1.4
[INFO] finished tweaking crates.io crate write-json 0.1.4
[INFO] tweaked toml for crates.io crate write-json 0.1.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate write-json 0.1.4 on toolchain a7ee93192a766fb0dafa23def7154fc03cfcfc3e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "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" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bd58c6e70a987f2cf95691121c77d33ab0f0049e19bcd658fb3f1a1a3511582
[INFO] running `Command { std: "docker" "start" "-a" "0bd58c6e70a987f2cf95691121c77d33ab0f0049e19bcd658fb3f1a1a3511582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bd58c6e70a987f2cf95691121c77d33ab0f0049e19bcd658fb3f1a1a3511582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bd58c6e70a987f2cf95691121c77d33ab0f0049e19bcd658fb3f1a1a3511582", kill_on_drop: false }`
[INFO] [stdout] 0bd58c6e70a987f2cf95691121c77d33ab0f0049e19bcd658fb3f1a1a3511582
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c7366ec4bd474addfdea9bd91221662cee0b747097c8d583e63bd8bb4d43b6b
[INFO] running `Command { std: "docker" "start" "-a" "5c7366ec4bd474addfdea9bd91221662cee0b747097c8d583e63bd8bb4d43b6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling write-json v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "5c7366ec4bd474addfdea9bd91221662cee0b747097c8d583e63bd8bb4d43b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c7366ec4bd474addfdea9bd91221662cee0b747097c8d583e63bd8bb4d43b6b", kill_on_drop: false }`
[INFO] [stdout] 5c7366ec4bd474addfdea9bd91221662cee0b747097c8d583e63bd8bb4d43b6b
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0589d88c7304937cb17af605980204ee3c0496b9f7b9d135a63099bef5896a46
[INFO] running `Command { std: "docker" "start" "-a" "0589d88c7304937cb17af605980204ee3c0496b9f7b9d135a63099bef5896a46", kill_on_drop: false }`
[INFO] [stderr] error: failed to create directory `/opt/rustwide/target/debug/.fingerprint/write-json-05ae97390e68d2c8`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] running `Command { std: "docker" "inspect" "0589d88c7304937cb17af605980204ee3c0496b9f7b9d135a63099bef5896a46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0589d88c7304937cb17af605980204ee3c0496b9f7b9d135a63099bef5896a46", kill_on_drop: false }`
[INFO] [stdout] 0589d88c7304937cb17af605980204ee3c0496b9f7b9d135a63099bef5896a46