[INFO] cloning repository https://github.com/dragan-novakovic/code-go-brrr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dragan-novakovic/code-go-brrr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragan-novakovic%2Fcode-go-brrr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragan-novakovic%2Fcode-go-brrr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c165bb9cdd1550bb7498ee625cc1df0cfadf613
[INFO] checking dragan-novakovic/code-go-brrr against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragan-novakovic%2Fcode-go-brrr" "/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/dragan-novakovic/code-go-brrr on toolchain 8f359beca4e58bc3ae795a666301a8f47023044c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dragan-novakovic/code-go-brrr
[INFO] finished tweaking git repo https://github.com/dragan-novakovic/code-go-brrr
[INFO] tweaked toml for git repo https://github.com/dragan-novakovic/code-go-brrr written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dragan-novakovic/code-go-brrr 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" "+8f359beca4e58bc3ae795a666301a8f47023044c" "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 dragan-novakovic/code-go-brrr against try#80d5fe37e16a0befb4128414cb6a11d544788c0a for pr-121557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragan-novakovic%2Fcode-go-brrr" "/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/dragan-novakovic/code-go-brrr on toolchain 80d5fe37e16a0befb4128414cb6a11d544788c0a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dragan-novakovic/code-go-brrr
[INFO] finished tweaking git repo https://github.com/dragan-novakovic/code-go-brrr
[INFO] tweaked toml for git repo https://github.com/dragan-novakovic/code-go-brrr written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/dragan-novakovic/code-go-brrr 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" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "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" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 545b9484b821af7d450889a94dcaadd106cdde21e89b92417896c6224e31f630
[INFO] running `Command { std: "docker" "start" "-a" "545b9484b821af7d450889a94dcaadd106cdde21e89b92417896c6224e31f630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "545b9484b821af7d450889a94dcaadd106cdde21e89b92417896c6224e31f630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "545b9484b821af7d450889a94dcaadd106cdde21e89b92417896c6224e31f630", kill_on_drop: false }`
[INFO] [stdout] 545b9484b821af7d450889a94dcaadd106cdde21e89b92417896c6224e31f630
[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" "+80d5fe37e16a0befb4128414cb6a11d544788c0a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 364b6e35532167dcad06f8182e582bfa12b8f9deadcdbdb6088d02e00c43cc28
[INFO] running `Command { std: "docker" "start" "-a" "364b6e35532167dcad06f8182e582bfa12b8f9deadcdbdb6088d02e00c43cc28", kill_on_drop: false }`
[INFO] [stderr]     Checking code-go-brrr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `base`
[INFO] [stdout]  --> src/algo/trapping_rain_water.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn trapping_rain_water(base: Vec<i32>) -> i32 {
[INFO] [stdout]   |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_base`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `base`
[INFO] [stdout]  --> src/algo/trapping_rain_water.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn trapping_rain_water(base: Vec<i32>) -> i32 {
[INFO] [stdout]   |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_base`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `binary_search` is never used
[INFO] [stdout]  --> src/algo/binary_search.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn binary_search(sorted_array: Vec<i32>, key: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort` is never used
[INFO] [stdout]  --> src/algo/heapsort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn sort(arr: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_intervals` is never used
[INFO] [stdout]  --> src/algo/merge_interval.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn merge_intervals(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parentIndex` should have a snake case name
[INFO] [stdout]  --> src/algo/heapsort.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn parentIndex(i: f64) -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^ help: convert the identifier to snake case: `parent_index`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `parentIndex` should have a snake case name
[INFO] [stdout]  --> src/algo/heapsort.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let parentIndex = i - 1f64 / 2f64;
[INFO] [stdout]   |             ^^^^^^^^^^^ help: convert the identifier to snake case: `parent_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `binary_search` is never used
[INFO] [stdout]  --> src/algo/binary_search.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn binary_search(sorted_array: Vec<i32>, key: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort` is never used
[INFO] [stdout]  --> src/algo/heapsort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn sort(arr: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_intervals` is never used
[INFO] [stdout]  --> src/algo/merge_interval.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn merge_intervals(intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parentIndex` should have a snake case name
[INFO] [stdout]  --> src/algo/heapsort.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn parentIndex(i: f64) -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^ help: convert the identifier to snake case: `parent_index`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `parentIndex` should have a snake case name
[INFO] [stdout]  --> src/algo/heapsort.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |         let parentIndex = i - 1f64 / 2f64;
[INFO] [stdout]   |             ^^^^^^^^^^^ help: convert the identifier to snake case: `parent_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "364b6e35532167dcad06f8182e582bfa12b8f9deadcdbdb6088d02e00c43cc28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "364b6e35532167dcad06f8182e582bfa12b8f9deadcdbdb6088d02e00c43cc28", kill_on_drop: false }`
[INFO] [stdout] 364b6e35532167dcad06f8182e582bfa12b8f9deadcdbdb6088d02e00c43cc28