[INFO] cloning repository https://github.com/dwallach1/Spell-Checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dwallach1/Spell-Checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwallach1%2FSpell-Checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwallach1%2FSpell-Checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 21ceaec76b202443107aa3787e18957b7ecd6908
[INFO] checking dwallach1/Spell-Checker against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwallach1%2FSpell-Checker" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dwallach1/Spell-Checker on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dwallach1/Spell-Checker
[INFO] finished tweaking git repo https://github.com/dwallach1/Spell-Checker
[INFO] tweaked toml for git repo https://github.com/dwallach1/Spell-Checker written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/dwallach1/Spell-Checker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0619e44d7bd33d0da305b8db1f2943317412b1d0d453ab981b76feb3a2e4247e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0619e44d7bd33d0da305b8db1f2943317412b1d0d453ab981b76feb3a2e4247e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0619e44d7bd33d0da305b8db1f2943317412b1d0d453ab981b76feb3a2e4247e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0619e44d7bd33d0da305b8db1f2943317412b1d0d453ab981b76feb3a2e4247e", kill_on_drop: false }`
[INFO] [stdout] 0619e44d7bd33d0da305b8db1f2943317412b1d0d453ab981b76feb3a2e4247e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce240bfac7cfcb72a722e333c4c094477805a2f3fdb40d4ba261422ceac47dd0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ce240bfac7cfcb72a722e333c4c094477805a2f3fdb40d4ba261422ceac47dd0", kill_on_drop: false }`
[INFO] [stderr]     Checking hw2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Write`, `stdin`, `stdout`
[INFO] [stdout]  --> src/spell_checker.rs:3:41
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Read, BufReader, BufRead, stdin, Write, stdout};
[INFO] [stdout]   |                                         ^^^^^  ^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write`, `stdin`, `stdout`
[INFO] [stdout]  --> src/spell_checker.rs:3:41
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Read, BufReader, BufRead, stdin, Write, stdout};
[INFO] [stdout]   |                                         ^^^^^  ^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `printer`
[INFO] [stdout]   --> src/spell_checker.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn printer(cache: &Trie, level: usize) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `printer`
[INFO] [stdout]   --> src/spell_checker.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn printer(cache: &Trie, level: usize) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "ce240bfac7cfcb72a722e333c4c094477805a2f3fdb40d4ba261422ceac47dd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce240bfac7cfcb72a722e333c4c094477805a2f3fdb40d4ba261422ceac47dd0", kill_on_drop: false }`
[INFO] [stdout] ce240bfac7cfcb72a722e333c4c094477805a2f3fdb40d4ba261422ceac47dd0