[INFO] cloning repository https://github.com/hkohko/theprimeagen-algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hkohko/theprimeagen-algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhkohko%2Ftheprimeagen-algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhkohko%2Ftheprimeagen-algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d888ce6c3f830fdd06f988ef0c4e888741f22761
[INFO] checking hkohko/theprimeagen-algorithms against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhkohko%2Ftheprimeagen-algorithms" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hkohko/theprimeagen-algorithms on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hkohko/theprimeagen-algorithms
[INFO] finished tweaking git repo https://github.com/hkohko/theprimeagen-algorithms
[INFO] tweaked toml for git repo https://github.com/hkohko/theprimeagen-algorithms written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hkohko/theprimeagen-algorithms 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" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "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 hkohko/theprimeagen-algorithms against try#6a5749073f2ebf59d7740d30e50a932a85756ee7 for pr-127655
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhkohko%2Ftheprimeagen-algorithms" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hkohko/theprimeagen-algorithms on toolchain 6a5749073f2ebf59d7740d30e50a932a85756ee7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hkohko/theprimeagen-algorithms
[INFO] finished tweaking git repo https://github.com/hkohko/theprimeagen-algorithms
[INFO] tweaked toml for git repo https://github.com/hkohko/theprimeagen-algorithms written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hkohko/theprimeagen-algorithms 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" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 131d593291e3b71775cdd0442f1bc4cf64dfeab255e8c0481d4e7b5f59c9657b
[INFO] running `Command { std: "docker" "start" "-a" "131d593291e3b71775cdd0442f1bc4cf64dfeab255e8c0481d4e7b5f59c9657b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "131d593291e3b71775cdd0442f1bc4cf64dfeab255e8c0481d4e7b5f59c9657b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "131d593291e3b71775cdd0442f1bc4cf64dfeab255e8c0481d4e7b5f59c9657b", kill_on_drop: false }`
[INFO] [stdout] 131d593291e3b71775cdd0442f1bc4cf64dfeab255e8c0481d4e7b5f59c9657b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aecd697974fc1156f09fc14ca1a233aba575008eb14321483adf06b7a19b07e5
[INFO] running `Command { std: "docker" "start" "-a" "aecd697974fc1156f09fc14ca1a233aba575008eb14321483adf06b7a19b07e5", kill_on_drop: false }`
[INFO] [stderr]     Checking theprimeagen_algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/an_array.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let a = ["hello", "world"];
[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]  --> src/an_array.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let a = ["hello", "world"];
[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: function `still_On` should have a snake case name
[INFO] [stdout]  --> src/big_o.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn still_On() {
[INFO] [stdout]   |        ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `still_on`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `O_N_squared` should have a snake case name
[INFO] [stdout]   --> src/big_o.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn O_N_squared() {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `o_n_squared`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `still_On` should have a snake case name
[INFO] [stdout]  --> src/big_o.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn still_On() {
[INFO] [stdout]   |        ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `still_on`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `O_N_squared` should have a snake case name
[INFO] [stdout]   --> src/big_o.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn O_N_squared() {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `o_n_squared`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `theprimeagen_algorithms::an_array::array_main`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use theprimeagen_algorithms::an_array::array_main;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `O_N_squared` and `still_On`
[INFO] [stdout]  --> src/main.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | use theprimeagen_algorithms::big_o::{still_On, O_N_squared};
[INFO] [stdout]   |                                      ^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `theprimeagen_algorithms::linear_search::linear_search_main`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use theprimeagen_algorithms::linear_search::linear_search_main;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `theprimeagen_algorithms::an_array::array_main`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use theprimeagen_algorithms::an_array::array_main;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `O_N_squared` and `still_On`
[INFO] [stdout]  --> src/main.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | use theprimeagen_algorithms::big_o::{still_On, O_N_squared};
[INFO] [stdout]   |                                      ^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `theprimeagen_algorithms::linear_search::linear_search_main`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use theprimeagen_algorithms::linear_search::linear_search_main;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "aecd697974fc1156f09fc14ca1a233aba575008eb14321483adf06b7a19b07e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aecd697974fc1156f09fc14ca1a233aba575008eb14321483adf06b7a19b07e5", kill_on_drop: false }`
[INFO] [stdout] aecd697974fc1156f09fc14ca1a233aba575008eb14321483adf06b7a19b07e5