[INFO] cloning repository https://github.com/zacck/rust_binary_guess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zacck/rust_binary_guess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacck%2Frust_binary_guess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacck%2Frust_binary_guess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 96def8451d20fcdfb809649666a5701a74fb563e
[INFO] checking zacck/rust_binary_guess against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacck%2Frust_binary_guess" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zacck/rust_binary_guess on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zacck/rust_binary_guess
[INFO] finished tweaking git repo https://github.com/zacck/rust_binary_guess
[INFO] tweaked toml for git repo https://github.com/zacck/rust_binary_guess written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zacck/rust_binary_guess 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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7929bde282bb5f8032ffdaf178b8f372d9c9e5296bbc722a56272516a1e3e9da
[INFO] running `Command { std: "docker" "start" "-a" "7929bde282bb5f8032ffdaf178b8f372d9c9e5296bbc722a56272516a1e3e9da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7929bde282bb5f8032ffdaf178b8f372d9c9e5296bbc722a56272516a1e3e9da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7929bde282bb5f8032ffdaf178b8f372d9c9e5296bbc722a56272516a1e3e9da", kill_on_drop: false }`
[INFO] [stdout] 7929bde282bb5f8032ffdaf178b8f372d9c9e5296bbc722a56272516a1e3e9da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66bfe75e1429c0b17e022878d37b6dd7fd80ca829c075c4d5f5de066f72bc995
[INFO] running `Command { std: "docker" "start" "-a" "66bfe75e1429c0b17e022878d37b6dd7fd80ca829c075c4d5f5de066f72bc995", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rust_bin_search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]   --> src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     V4(u8, u8, u8, u8),
[INFO] [stdout]    |     -- ^^  ^^  ^^  ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 55 -     V4(u8, u8, u8, u8),
[INFO] [stdout] 55 +     V4((), (), (), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_bin_search` (bin "rust_bin_search" test); 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/8d46be77cd48fdbcced888d027457e2c9cf2aa16/bin/rustc --crate-name rust_bin_search --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=85f4742edb76ded0 -C extra-filename=-43b487bfd9f864f1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern rand=/opt/rustwide/target/debug/deps/librand-2f12f0bc358cb8f6.rmeta --cap-lints=forbid` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]   --> src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     V4(u8, u8, u8, u8),
[INFO] [stdout]    |     -- ^^  ^^  ^^  ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 55 -     V4(u8, u8, u8, u8),
[INFO] [stdout] 55 +     V4((), (), (), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_bin_search` (bin "rust_bin_search"); 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/8d46be77cd48fdbcced888d027457e2c9cf2aa16/bin/rustc --crate-name rust_bin_search --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=83f9733c8685eaa8 -C extra-filename=-ecc7543df80f3be4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern rand=/opt/rustwide/target/debug/deps/librand-2f12f0bc358cb8f6.rmeta --cap-lints=forbid` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "66bfe75e1429c0b17e022878d37b6dd7fd80ca829c075c4d5f5de066f72bc995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66bfe75e1429c0b17e022878d37b6dd7fd80ca829c075c4d5f5de066f72bc995", kill_on_drop: false }`
[INFO] [stdout] 66bfe75e1429c0b17e022878d37b6dd7fd80ca829c075c4d5f5de066f72bc995