[INFO] cloning repository https://github.com/GroupTheorist12/permutation_operations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GroupTheorist12/permutation_operations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGroupTheorist12%2Fpermutation_operations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGroupTheorist12%2Fpermutation_operations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e27d57023188888c8c64a82cb287ea2a6f37665c
[INFO] checking GroupTheorist12/permutation_operations against master#3f28fe133475ec5faf3413b556bf3cfb0d51336c for pr-112365-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGroupTheorist12%2Fpermutation_operations" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GroupTheorist12/permutation_operations on toolchain 3f28fe133475ec5faf3413b556bf3cfb0d51336c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f28fe133475ec5faf3413b556bf3cfb0d51336c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GroupTheorist12/permutation_operations
[INFO] finished tweaking git repo https://github.com/GroupTheorist12/permutation_operations
[INFO] tweaked toml for git repo https://github.com/GroupTheorist12/permutation_operations written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/GroupTheorist12/permutation_operations 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" "+3f28fe133475ec5faf3413b556bf3cfb0d51336c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking GroupTheorist12/permutation_operations against try#2eb702bf20a12c67e5629a5c82890c910c267bd9 for pr-112365-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGroupTheorist12%2Fpermutation_operations" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GroupTheorist12/permutation_operations on toolchain 2eb702bf20a12c67e5629a5c82890c910c267bd9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2eb702bf20a12c67e5629a5c82890c910c267bd9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GroupTheorist12/permutation_operations
[INFO] finished tweaking git repo https://github.com/GroupTheorist12/permutation_operations
[INFO] tweaked toml for git repo https://github.com/GroupTheorist12/permutation_operations written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/GroupTheorist12/permutation_operations 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" "+2eb702bf20a12c67e5629a5c82890c910c267bd9" "fetch" "--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: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2eb702bf20a12c67e5629a5c82890c910c267bd9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c82d4bce2aecb489316b9aabe01e8afb0104fb0d964433fa8ad3b3a2334a8b72
[INFO] running `Command { std: "docker" "start" "-a" "c82d4bce2aecb489316b9aabe01e8afb0104fb0d964433fa8ad3b3a2334a8b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c82d4bce2aecb489316b9aabe01e8afb0104fb0d964433fa8ad3b3a2334a8b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c82d4bce2aecb489316b9aabe01e8afb0104fb0d964433fa8ad3b3a2334a8b72", kill_on_drop: false }`
[INFO] [stdout] c82d4bce2aecb489316b9aabe01e8afb0104fb0d964433fa8ad3b3a2334a8b72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2eb702bf20a12c67e5629a5c82890c910c267bd9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1764a572e54544b6381b231cc846367a32c2c915a9bd3270d4caedcc942bd113
[INFO] running `Command { std: "docker" "start" "-a" "1764a572e54544b6381b231cc846367a32c2c915a9bd3270d4caedcc942bd113", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling permutation_operations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `idn`
[INFO] [stdout]   --> src/perm_ops/main.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let idn = Permutation::new(v.clone(), v.clone());
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_idn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2c`
[INFO] [stdout]    --> src/perm_ops/main.rs:468:9
[INFO] [stdout]     |
[INFO] [stdout] 468 |     let p2c = p2.clone();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_p2c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_row` is never used
[INFO] [stdout]    --> src/perm_ops/int_matrix.rs:272:12
[INFO] [stdout]     |
[INFO] [stdout] 271 | impl IntMatrix {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 272 |     pub fn get_row(&self, row: usize) ->Vec<i32> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_tuple_vector` is never used
[INFO] [stdout]    --> src/perm_ops/permutation.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 24  | impl Permutation {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn to_tuple_vector(&self) -> Vec<(i32, i32)> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idn`
[INFO] [stdout]   --> src/perm_ops/main.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let idn = Permutation::new(v.clone(), v.clone());
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_idn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2c`
[INFO] [stdout]    --> src/perm_ops/main.rs:468:9
[INFO] [stdout]     |
[INFO] [stdout] 468 |     let p2c = p2.clone();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_p2c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_row` is never used
[INFO] [stdout]    --> src/perm_ops/int_matrix.rs:272:12
[INFO] [stdout]     |
[INFO] [stdout] 271 | impl IntMatrix {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 272 |     pub fn get_row(&self, row: usize) ->Vec<i32> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_tuple_vector` is never used
[INFO] [stdout]    --> src/perm_ops/permutation.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 24  | impl Permutation {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn to_tuple_vector(&self) -> Vec<(i32, i32)> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "1764a572e54544b6381b231cc846367a32c2c915a9bd3270d4caedcc942bd113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1764a572e54544b6381b231cc846367a32c2c915a9bd3270d4caedcc942bd113", kill_on_drop: false }`
[INFO] [stdout] 1764a572e54544b6381b231cc846367a32c2c915a9bd3270d4caedcc942bd113