[INFO] cloning repository https://github.com/nick-hill/SamplePrograms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nick-hill/SamplePrograms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnick-hill%2FSamplePrograms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnick-hill%2FSamplePrograms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d418698644a2ac4c15b0d5c090b4289a0829a878
[INFO] checking nick-hill/SamplePrograms against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnick-hill%2FSamplePrograms" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nick-hill/SamplePrograms on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nick-hill/SamplePrograms
[INFO] finished tweaking git repo https://github.com/nick-hill/SamplePrograms
[INFO] tweaked toml for git repo https://github.com/nick-hill/SamplePrograms written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/nick-hill/SamplePrograms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a80f9f9b21a36ca6aa1fef3056312b4847050d5be2d05ea1b82e344714d24bde
[INFO] running `Command { std: "docker" "start" "-a" "a80f9f9b21a36ca6aa1fef3056312b4847050d5be2d05ea1b82e344714d24bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a80f9f9b21a36ca6aa1fef3056312b4847050d5be2d05ea1b82e344714d24bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a80f9f9b21a36ca6aa1fef3056312b4847050d5be2d05ea1b82e344714d24bde", kill_on_drop: false }`
[INFO] [stdout] a80f9f9b21a36ca6aa1fef3056312b4847050d5be2d05ea1b82e344714d24bde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3557ded5df37d3e14004f1b5497ab5f2c05ba4988ce8c82a05df49b212ede5ab
[INFO] running `Command { std: "docker" "start" "-a" "3557ded5df37d3e14004f1b5497ab5f2c05ba4988ce8c82a05df49b212ede5ab", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking text_io v0.1.7
[INFO] [stderr]     Checking SamplePrograms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bubble_sort.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     for x in 0..var{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bubble_sort.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     for x in 0..var{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `SamplePrograms` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `sample_programs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `SamplePrograms` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `sample_programs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "3557ded5df37d3e14004f1b5497ab5f2c05ba4988ce8c82a05df49b212ede5ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3557ded5df37d3e14004f1b5497ab5f2c05ba4988ce8c82a05df49b212ede5ab", kill_on_drop: false }`
[INFO] [stdout] 3557ded5df37d3e14004f1b5497ab5f2c05ba4988ce8c82a05df49b212ede5ab