[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count/refs: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/sendemail-validate.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count/hooks/sendemail-validate.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/fsmonitor-watchman.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count/hooks/fsmonitor-watchman.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 3)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 4)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 5)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 6)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 7)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 8)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 9)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 10)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 11)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 12)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 13)
[INFO] cloning repository https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcinwasowicz/Rust-Word-Count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32d807d0d0d285e194059e76202048f536dff883
[INFO] checking marcinwasowicz/Rust-Word-Count against master#a26e97be8826d408309fffbd8168362365719f50 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcinwasowicz%2FRust-Word-Count" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marcinwasowicz/Rust-Word-Count on toolchain a26e97be8826d408309fffbd8168362365719f50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] finished tweaking git repo https://github.com/marcinwasowicz/Rust-Word-Count
[INFO] tweaked toml for git repo https://github.com/marcinwasowicz/Rust-Word-Count written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/marcinwasowicz/Rust-Word-Count already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 541311c2cf73fd849133db4d43db75c1f11e33aa8a3d234430af843b3c9ff9e6
[INFO] running `Command { std: "docker" "start" "-a" "541311c2cf73fd849133db4d43db75c1f11e33aa8a3d234430af843b3c9ff9e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "541311c2cf73fd849133db4d43db75c1f11e33aa8a3d234430af843b3c9ff9e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "541311c2cf73fd849133db4d43db75c1f11e33aa8a3d234430af843b3c9ff9e6", kill_on_drop: false }`
[INFO] [stdout] 541311c2cf73fd849133db4d43db75c1f11e33aa8a3d234430af843b3c9ff9e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b700326366f4604a747bb49c7814d75de5a293a7f99ba22d62e7f690fd18dedd
[INFO] running `Command { std: "docker" "start" "-a" "b700326366f4604a747bb49c7814d75de5a293a7f99ba22d62e7f690fd18dedd", kill_on_drop: false }`
[INFO] [stderr]     Checking word_count v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/word_count_lib/file_ops.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 writeln!(file, "{}: {}", word, count);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/word_count_lib/file_ops.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 writeln!(file, "{}: {}", word, count);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "b700326366f4604a747bb49c7814d75de5a293a7f99ba22d62e7f690fd18dedd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b700326366f4604a747bb49c7814d75de5a293a7f99ba22d62e7f690fd18dedd", kill_on_drop: false }`
[INFO] [stdout] b700326366f4604a747bb49c7814d75de5a293a7f99ba22d62e7f690fd18dedd