[INFO] cloning repository https://github.com/carly-kr/learn-rust-jubilant-chainsaw
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carly-kr/learn-rust-jubilant-chainsaw" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarly-kr%2Flearn-rust-jubilant-chainsaw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarly-kr%2Flearn-rust-jubilant-chainsaw'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarly-kr%2Flearn-rust-jubilant-chainsaw/objects/info: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/carly-kr/learn-rust-jubilant-chainsaw
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carly-kr/learn-rust-jubilant-chainsaw" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarly-kr%2Flearn-rust-jubilant-chainsaw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarly-kr%2Flearn-rust-jubilant-chainsaw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ebb3e9d6a4188ffa7d35fe3720ceee737e154d2
[INFO] checking carly-kr/learn-rust-jubilant-chainsaw against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarly-kr%2Flearn-rust-jubilant-chainsaw" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: unable to create directory for '/workspace/builds/worker-3-tc2/source/.git/logs/refs/remotes/origin/HEAD': No such file or directory
[INFO] [stderr] error: unable to write symref for refs/remotes/origin/HEAD: No space left on device
[INFO] [stderr] fatal: unable to update refs/remotes/origin/HEAD
[INFO] checking carly-kr/learn-rust-jubilant-chainsaw against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarly-kr%2Flearn-rust-jubilant-chainsaw" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carly-kr/learn-rust-jubilant-chainsaw on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carly-kr/learn-rust-jubilant-chainsaw
[INFO] finished tweaking git repo https://github.com/carly-kr/learn-rust-jubilant-chainsaw
[INFO] tweaked toml for git repo https://github.com/carly-kr/learn-rust-jubilant-chainsaw written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/carly-kr/learn-rust-jubilant-chainsaw 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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9d1960f4f35bf91f09e0412b4814ef9fbf108339d439d6215f4d6b6ad764a58
[INFO] running `Command { std: "docker" "start" "-a" "f9d1960f4f35bf91f09e0412b4814ef9fbf108339d439d6215f4d6b6ad764a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9d1960f4f35bf91f09e0412b4814ef9fbf108339d439d6215f4d6b6ad764a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9d1960f4f35bf91f09e0412b4814ef9fbf108339d439d6215f4d6b6ad764a58", kill_on_drop: false }`
[INFO] [stdout] f9d1960f4f35bf91f09e0412b4814ef9fbf108339d439d6215f4d6b6ad764a58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4e83c561c06989de80c2bac26bf7ff1b3b01d4c7bcd79c0b79a00bbad525f56
[INFO] running `Command { std: "docker" "start" "-a" "c4e83c561c06989de80c2bac26bf7ff1b3b01d4c7bcd79c0b79a00bbad525f56", kill_on_drop: false }`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut map: HashMap<String, String> = HashMap::new();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut map: HashMap<String, String> = HashMap::new();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Just` is never constructed
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Maybe<T> {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 7 |     Nil,
[INFO] [stdout] 8 |     Just(T),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Maybe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Just` is never constructed
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Maybe<T> {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 7 |     Nil,
[INFO] [stdout] 8 |     Just(T),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Maybe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "c4e83c561c06989de80c2bac26bf7ff1b3b01d4c7bcd79c0b79a00bbad525f56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e83c561c06989de80c2bac26bf7ff1b3b01d4c7bcd79c0b79a00bbad525f56", kill_on_drop: false }`
[INFO] [stdout] c4e83c561c06989de80c2bac26bf7ff1b3b01d4c7bcd79c0b79a00bbad525f56