[INFO] cloning repository https://github.com/jedjoud10/ulamgen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jedjoud10/ulamgen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjedjoud10%2Fulamgen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjedjoud10%2Fulamgen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 43f011f32d764d276b861911f468d6f6850b309d
[INFO] checking jedjoud10/ulamgen against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjedjoud10%2Fulamgen" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jedjoud10/ulamgen
[INFO] finished tweaking git repo https://github.com/jedjoud10/ulamgen
[INFO] tweaked toml for git repo https://github.com/jedjoud10/ulamgen written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jedjoud10/ulamgen on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jedjoud10/ulamgen 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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33b4535a87a39ba455330d005bb99f22b0a9ab8d5d96381c28b30fe4d0c8c3a2
[INFO] running `Command { std: "docker" "start" "-a" "33b4535a87a39ba455330d005bb99f22b0a9ab8d5d96381c28b30fe4d0c8c3a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33b4535a87a39ba455330d005bb99f22b0a9ab8d5d96381c28b30fe4d0c8c3a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33b4535a87a39ba455330d005bb99f22b0a9ab8d5d96381c28b30fe4d0c8c3a2", kill_on_drop: false }`
[INFO] [stdout] 33b4535a87a39ba455330d005bb99f22b0a9ab8d5d96381c28b30fe4d0c8c3a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca4e4bc0d0d29dd5d6a2bdd80d234e41afc577c1c3af028eb8f1c8d49e234f97
[INFO] running `Command { std: "docker" "start" "-a" "ca4e4bc0d0d29dd5d6a2bdd80d234e41afc577c1c3af028eb8f1c8d49e234f97", kill_on_drop: false }`
[INFO] [stderr]     Checking ulamgen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `HashSet` and `linked_list`
[INFO] [stdout]  --> src/ulam.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{linked_list, HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^^^^^           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashSet` and `linked_list`
[INFO] [stdout]  --> src/ulam.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{linked_list, HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^^^^^           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `next` is never used
[INFO] [stdout]  --> src/ulam.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn next(arr: &[u32]) -> u32 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `next` is never used
[INFO] [stdout]  --> src/ulam.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn next(arr: &[u32]) -> u32 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `instantiate` is never used
[INFO] [stdout]   --> src/ulam.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn instantiate(size: usize) -> Vec<u32> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `instantiate` is never used
[INFO] [stdout]   --> src/ulam.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn instantiate(size: usize) -> Vec<u32> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "ca4e4bc0d0d29dd5d6a2bdd80d234e41afc577c1c3af028eb8f1c8d49e234f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca4e4bc0d0d29dd5d6a2bdd80d234e41afc577c1c3af028eb8f1c8d49e234f97", kill_on_drop: false }`
[INFO] [stdout] ca4e4bc0d0d29dd5d6a2bdd80d234e41afc577c1c3af028eb8f1c8d49e234f97