[INFO] cloning repository https://github.com/fslaktern/data-structures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fslaktern/data-structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffslaktern%2Fdata-structures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffslaktern%2Fdata-structures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62c6becb7ecc24959ffbc54209ccc6f87b1e0929
[INFO] checking fslaktern/data-structures against master#17ffbc81a30c094193836a5d7f90dff273b5df93 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffslaktern%2Fdata-structures" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fslaktern/data-structures on toolchain 17ffbc81a30c094193836a5d7f90dff273b5df93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fslaktern/data-structures
[INFO] finished tweaking git repo https://github.com/fslaktern/data-structures
[INFO] tweaked toml for git repo https://github.com/fslaktern/data-structures written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/fslaktern/data-structures 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" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file `/workspace/builds/worker-0-tc2/source/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `data_structures`
[INFO] [stderr]   * `bin` target `data_structures`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking fslaktern/data-structures against master#17ffbc81a30c094193836a5d7f90dff273b5df93 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffslaktern%2Fdata-structures" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fslaktern/data-structures on toolchain 17ffbc81a30c094193836a5d7f90dff273b5df93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fslaktern/data-structures
[INFO] finished tweaking git repo https://github.com/fslaktern/data-structures
[INFO] tweaked toml for git repo https://github.com/fslaktern/data-structures written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/fslaktern/data-structures 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" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file `/workspace/builds/worker-0-tc2/source/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `data_structures`
[INFO] [stderr]   * `bin` target `data_structures`
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 747d3085e48d76828f9f27711b73237aa04435c28027478d4d27034e8a5763d0
[INFO] running `Command { std: "docker" "start" "-a" "747d3085e48d76828f9f27711b73237aa04435c28027478d4d27034e8a5763d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "747d3085e48d76828f9f27711b73237aa04435c28027478d4d27034e8a5763d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "747d3085e48d76828f9f27711b73237aa04435c28027478d4d27034e8a5763d0", kill_on_drop: false }`
[INFO] [stdout] 747d3085e48d76828f9f27711b73237aa04435c28027478d4d27034e8a5763d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e8270c93bcc09f1f341c239edefea4266d09070a1d9db6eae5f170f3fd8bb1c
[INFO] running `Command { std: "docker" "start" "-a" "5e8270c93bcc09f1f341c239edefea4266d09070a1d9db6eae5f170f3fd8bb1c", kill_on_drop: false }`
[INFO] [stderr] warning: file `/opt/rustwide/workdir/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `data_structures`
[INFO] [stderr]   * `bin` target `data_structures`
[INFO] [stderr]     Checking data_structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {}
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RemoveArray`, `ReplaceArray`, `SearchArray`, and `SortArray`
[INFO] [stdout]  --> tests/test_array.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     ReplaceArray,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 6 |     RemoveArray,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 7 |     SearchArray,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 8 |     SortArray
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_array.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let a = Array::<u8>::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> tests/test_array.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let a = Array::<u8>::new();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_insert` is never used
[INFO] [stdout]   --> tests/test_array.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn test_insert() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_pop` is never used
[INFO] [stdout]   --> tests/test_array.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn test_pop() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_remove` is never used
[INFO] [stdout]   --> tests/test_array.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn test_remove() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_replace` is never used
[INFO] [stdout]   --> tests/test_array.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn test_replace() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_find` is never used
[INFO] [stdout]   --> tests/test_array.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn test_find() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_find_all` is never used
[INFO] [stdout]   --> tests/test_array.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn test_find_all() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_quick_sort` is never used
[INFO] [stdout]   --> tests/test_array.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn test_quick_sort() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_bubble_sort` is never used
[INFO] [stdout]   --> tests/test_array.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn test_bubble_sort() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_merge_sort` is never used
[INFO] [stdout]   --> tests/test_array.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn test_merge_sort() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_selection_sort` is never used
[INFO] [stdout]   --> tests/test_array.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn test_selection_sort() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_insertion_sort` is never used
[INFO] [stdout]   --> tests/test_array.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn test_insertion_sort() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_drop` is never used
[INFO] [stdout]   --> tests/test_array.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn test_drop() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_display` is never used
[INFO] [stdout]   --> tests/test_array.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn test_display() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_default` is never used
[INFO] [stdout]    --> tests/test_array.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn test_default() {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "5e8270c93bcc09f1f341c239edefea4266d09070a1d9db6eae5f170f3fd8bb1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e8270c93bcc09f1f341c239edefea4266d09070a1d9db6eae5f170f3fd8bb1c", kill_on_drop: false }`
[INFO] [stdout] 5e8270c93bcc09f1f341c239edefea4266d09070a1d9db6eae5f170f3fd8bb1c