[INFO] fetching crate minilp 0.2.2...
[INFO] checking minilp-0.2.2 against master#249cb84316401daf040832cdbb8a45e0f5ab6af8 for pr-138438
[INFO] extracting crate minilp 0.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate minilp 0.2.2 on toolchain 249cb84316401daf040832cdbb8a45e0f5ab6af8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate minilp 0.2.2
[INFO] finished tweaking crates.io crate minilp 0.2.2
[INFO] tweaked toml for crates.io crate minilp 0.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate minilp 0.2.2 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" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b06bc2e320063aa896155d74b39c6c649d6a2dc338a041fd34776cf02c96c70
[INFO] running `Command { std: "docker" "start" "-a" "1b06bc2e320063aa896155d74b39c6c649d6a2dc338a041fd34776cf02c96c70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b06bc2e320063aa896155d74b39c6c649d6a2dc338a041fd34776cf02c96c70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b06bc2e320063aa896155d74b39c6c649d6a2dc338a041fd34776cf02c96c70", kill_on_drop: false }`
[INFO] [stdout] 1b06bc2e320063aa896155d74b39c6c649d6a2dc338a041fd34776cf02c96c70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcf5dce1bc4ffdfa3e94ec7a456121aefd3d03ec93fb370455a73cbc0fcc363a
[INFO] running `Command { std: "docker" "start" "-a" "fcf5dce1bc4ffdfa3e94ec7a456121aefd3d03ec93fb370455a73cbc0fcc363a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking sprs v0.7.1
[INFO] [stderr]     Checking minilp v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ordering.rs:490:17
[INFO] [stdout]     |
[INFO] [stdout] 490 |             let mut cur_step = dfs_stack.last_mut().unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ordering.rs:490:17
[INFO] [stdout]     |
[INFO] [stdout] 490 |             let mut cur_step = dfs_stack.last_mut().unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `row2col` and `block_cols` are never read
[INFO] [stdout]    --> src/ordering.rs:547:9
[INFO] [stdout]     |
[INFO] [stdout] 545 | pub struct BlockDiagForm {
[INFO] [stdout]     |            ------------- fields in this struct
[INFO] [stdout] 546 |     /// Row permutation: for each original row its new row number so that diag is nonzero.
[INFO] [stdout] 547 |     pub row2col: Vec<usize>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 548 |     /// For each block its set of columns (the order of blocks is lower block triangular)
[INFO] [stdout] 549 |     pub block_cols: Vec<Vec<usize>>,
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BlockDiagForm` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minilp` (lib); 2 warnings 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/249cb84316401daf040832cdbb8a45e0f5ab6af8/bin/rustc --crate-name minilp --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=7ea72cb61a309335 -C extra-filename=-dc258dee2a4e1a69 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern log=/opt/rustwide/target/debug/deps/liblog-faa75689a272d604.rmeta --extern sprs=/opt/rustwide/target/debug/deps/libsprs-b0e9470b5344ec80.rmeta --cap-lints=forbid` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `minilp` (lib 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/249cb84316401daf040832cdbb8a45e0f5ab6af8/bin/rustc --crate-name minilp --edition=2018 src/lib.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=9efc0b0eeac5f969 -C extra-filename=-b1f0023e8d4fa4b1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-8dd5c527c0e108f6.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-faa75689a272d604.rmeta --extern ndarray=/opt/rustwide/target/debug/deps/libndarray-7c3c4926c9f8d3fc.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-574491c3e39bc027.rmeta --extern rand_pcg=/opt/rustwide/target/debug/deps/librand_pcg-e7faea80161b89ef.rmeta --extern sprs=/opt/rustwide/target/debug/deps/libsprs-b0e9470b5344ec80.rmeta --cap-lints=forbid` (exit status: 0)
[INFO] running `Command { std: "docker" "inspect" "fcf5dce1bc4ffdfa3e94ec7a456121aefd3d03ec93fb370455a73cbc0fcc363a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcf5dce1bc4ffdfa3e94ec7a456121aefd3d03ec93fb370455a73cbc0fcc363a", kill_on_drop: false }`
[INFO] [stdout] fcf5dce1bc4ffdfa3e94ec7a456121aefd3d03ec93fb370455a73cbc0fcc363a