[INFO] cloning repository https://github.com/ignavan39/rust-algo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ignavan39/rust-algo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fignavan39%2Frust-algo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fignavan39%2Frust-algo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3deae9dffbdd83e9c4837322e5f9f95d1b463032
[INFO] testing ignavan39/rust-algo against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fignavan39%2Frust-algo" "/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/ignavan39/rust-algo on toolchain ebf0cf75d368c035f4c7e7246d203bd469ee4a51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ignavan39/rust-algo
[INFO] finished tweaking git repo https://github.com/ignavan39/rust-algo
[INFO] tweaked toml for git repo https://github.com/ignavan39/rust-algo written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ignavan39/rust-algo 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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "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-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e61a9851b46f6dacb78c4c80661d9c0792adedac7b6fbcd4dd55c3118c8e31c
[INFO] running `Command { std: "docker" "start" "-a" "7e61a9851b46f6dacb78c4c80661d9c0792adedac7b6fbcd4dd55c3118c8e31c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e61a9851b46f6dacb78c4c80661d9c0792adedac7b6fbcd4dd55c3118c8e31c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e61a9851b46f6dacb78c4c80661d9c0792adedac7b6fbcd4dd55c3118c8e31c", kill_on_drop: false }`
[INFO] [stdout] 7e61a9851b46f6dacb78c4c80661d9c0792adedac7b6fbcd4dd55c3118c8e31c
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efb1230a108e6cb160ba82303f3e660faf0d5033c03bbf47fbfa1a34ca45e2fb
[INFO] running `Command { std: "docker" "start" "-a" "efb1230a108e6cb160ba82303f3e660faf0d5033c03bbf47fbfa1a34ca45e2fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `algo::find_left_max_occurrences_column::find_left_max_occurrences_column`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use algo::find_left_max_occurrences_column::find_left_max_occurrences_column;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `utils::vector_from_file::vector_from_file`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use utils::vector_from_file::vector_from_file;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_left_max_occurrences_column` is never used
[INFO] [stdout]  --> src/algo/find_left_max_occurrences_column.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn find_left_max_occurrences_column(arr: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_from_file` is never used
[INFO] [stdout]  --> src/utils/vector_from_file.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn vector_from_file(filename: impl AsRef<Path>) -> Vec<Vec<i32>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "efb1230a108e6cb160ba82303f3e660faf0d5033c03bbf47fbfa1a34ca45e2fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb1230a108e6cb160ba82303f3e660faf0d5033c03bbf47fbfa1a34ca45e2fb", kill_on_drop: false }`
[INFO] [stdout] efb1230a108e6cb160ba82303f3e660faf0d5033c03bbf47fbfa1a34ca45e2fb
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdf4be317ecd0b314d4a31cc5a54aac77dc9bd8e015a0278ccd44d050d9ba36a
[INFO] running `Command { std: "docker" "start" "-a" "bdf4be317ecd0b314d4a31cc5a54aac77dc9bd8e015a0278ccd44d050d9ba36a", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "bdf4be317ecd0b314d4a31cc5a54aac77dc9bd8e015a0278ccd44d050d9ba36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdf4be317ecd0b314d4a31cc5a54aac77dc9bd8e015a0278ccd44d050d9ba36a", kill_on_drop: false }`
[INFO] [stdout] bdf4be317ecd0b314d4a31cc5a54aac77dc9bd8e015a0278ccd44d050d9ba36a
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ce350048dc8789ca0836ae507f14e19f18f09fc652ff6af72b16de8e0216f3d4
[INFO] running `Command { std: "docker" "start" "-a" "ce350048dc8789ca0836ae507f14e19f18f09fc652ff6af72b16de8e0216f3d4", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "/var/lib/crater-agent-workspace/cargo-home" to rootfs at "/opt/rustwide/cargo-home": mkdir /var/lib/docker/overlay2/756b6c7a4ba193be1f7d37dc9c4a6f1a2072595091de007ca0e5a6feb75cc6f4/merged/opt/rustwide/cargo-home: no space left on device: unknown
[INFO] running `Command { std: "docker" "inspect" "ce350048dc8789ca0836ae507f14e19f18f09fc652ff6af72b16de8e0216f3d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce350048dc8789ca0836ae507f14e19f18f09fc652ff6af72b16de8e0216f3d4", kill_on_drop: false }`
[INFO] [stdout] ce350048dc8789ca0836ae507f14e19f18f09fc652ff6af72b16de8e0216f3d4