[INFO] cloning repository https://github.com/ernsttm/mapping
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ernsttm/mapping" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fernsttm%2Fmapping", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fernsttm%2Fmapping'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fffe80200cc357b8d54303910248423cca45cedb
[INFO] checking ernsttm/mapping against master#19f42cb9bb65555e7d95dab7d17573ae6c5d634c for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fernsttm%2Fmapping" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ernsttm/mapping on toolchain 19f42cb9bb65555e7d95dab7d17573ae6c5d634c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+19f42cb9bb65555e7d95dab7d17573ae6c5d634c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ernsttm/mapping
[INFO] finished tweaking git repo https://github.com/ernsttm/mapping
[INFO] tweaked toml for git repo https://github.com/ernsttm/mapping written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ernsttm/mapping 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" "+19f42cb9bb65555e7d95dab7d17573ae6c5d634c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+19f42cb9bb65555e7d95dab7d17573ae6c5d634c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1333a0572249dc33289215e676b039902f734924bccd5355bc635cb24db62be9
[INFO] running `Command { std: "docker" "start" "-a" "1333a0572249dc33289215e676b039902f734924bccd5355bc635cb24db62be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1333a0572249dc33289215e676b039902f734924bccd5355bc635cb24db62be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1333a0572249dc33289215e676b039902f734924bccd5355bc635cb24db62be9", kill_on_drop: false }`
[INFO] [stdout] 1333a0572249dc33289215e676b039902f734924bccd5355bc635cb24db62be9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+19f42cb9bb65555e7d95dab7d17573ae6c5d634c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4780eaeabca1445b3c70aaeaae4be376021aef975c9dd013f2f34a2012031faf
[INFO] running `Command { std: "docker" "start" "-a" "4780eaeabca1445b3c70aaeaae4be376021aef975c9dd013f2f34a2012031faf", kill_on_drop: false }`
[INFO] [stderr]     Checking mapping v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/laydown_walker.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |             None => (node_timings.push(self.gate_delay(root))),
[INFO] [stdout]    |                     ^                                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 36 -             None => (node_timings.push(self.gate_delay(root))),
[INFO] [stdout] 36 +             None => node_timings.push(self.gate_delay(root)),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/laydown_walker.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 None => (child_timings.push(cell.delay_a)),
[INFO] [stdout]    |                         ^                                ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -                 None => (child_timings.push(cell.delay_a)),
[INFO] [stdout] 50 +                 None => child_timings.push(cell.delay_a),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/laydown_walker.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 None => (child_timings.push(cell.delay_b)),
[INFO] [stdout]    |                         ^                                ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 62 -                 None => (child_timings.push(cell.delay_b)),
[INFO] [stdout] 62 +                 None => child_timings.push(cell.delay_b),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Tree`
[INFO] [stdout]   --> src/lib.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | use dag::{DAG, InputNode, Tree};
[INFO] [stdout]    |                           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/laydown_walker.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |             None => (node_timings.push(self.gate_delay(root))),
[INFO] [stdout]    |                     ^                                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 36 -             None => (node_timings.push(self.gate_delay(root))),
[INFO] [stdout] 36 +             None => node_timings.push(self.gate_delay(root)),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/laydown_walker.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 None => (child_timings.push(cell.delay_a)),
[INFO] [stdout]    |                         ^                                ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -                 None => (child_timings.push(cell.delay_a)),
[INFO] [stdout] 50 +                 None => child_timings.push(cell.delay_a),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/laydown_walker.rs:62:25
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 None => (child_timings.push(cell.delay_b)),
[INFO] [stdout]    |                         ^                                ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 62 -                 None => (child_timings.push(cell.delay_b)),
[INFO] [stdout] 62 +                 None => child_timings.push(cell.delay_b),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Tree`
[INFO] [stdout]   --> src/lib.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | use dag::{DAG, InputNode, Tree};
[INFO] [stdout]    |                           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/laydown_walker.rs:79:14
[INFO] [stdout]    |
[INFO] [stdout] 79 |         for (i, cell) in self.cells.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/lib.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     for index in 0..gate_number {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/lib.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     for index in 0..cell_number {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/lib.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |     for index in 0..node_num {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inputs` is never read
[INFO] [stdout]   --> src/lib.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Gate {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 33 |     inputs: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inputs` is never used
[INFO] [stdout]   --> src/dag.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn inputs(&self) -> &Vec<u32> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inputs` is never used
[INFO] [stdout]    --> src/dag.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 81  | impl DAG {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 112 |     pub fn inputs(&self, node: u32) -> &Vec<u32> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/laydown_walker.rs:79:14
[INFO] [stdout]    |
[INFO] [stdout] 79 |         for (i, cell) in self.cells.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/lib.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     for index in 0..gate_number {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/lib.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     for index in 0..cell_number {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: failed to write `/opt/rustwide/target/debug/.fingerprint/mapping-1f70dc79425820fa/invoked.timestamp`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: failed to write `/opt/rustwide/target/debug/.fingerprint/mapping-1d083129dee562dc/invoked.timestamp`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] error: could not compile `mapping` (lib test); 7 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/19f42cb9bb65555e7d95dab7d17573ae6c5d634c/bin/rustc --crate-name mapping --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=43c0e8b21d63c7c4 -C extra-filename=-383d54bc5a17572e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4780eaeabca1445b3c70aaeaae4be376021aef975c9dd013f2f34a2012031faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4780eaeabca1445b3c70aaeaae4be376021aef975c9dd013f2f34a2012031faf", kill_on_drop: false }`
[INFO] [stdout] 4780eaeabca1445b3c70aaeaae4be376021aef975c9dd013f2f34a2012031faf