[INFO] cloning repository https://github.com/zengol/option_enum_with_get_mut
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zengol/option_enum_with_get_mut" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2Foption_enum_with_get_mut", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2Foption_enum_with_get_mut'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2Foption_enum_with_get_mut: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/zengol/option_enum_with_get_mut
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zengol/option_enum_with_get_mut" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2Foption_enum_with_get_mut", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2Foption_enum_with_get_mut'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 239fdd574879d6bfd7d298d2ec3338b9acc5a098
[INFO] testing zengol/option_enum_with_get_mut against 1.86.0 for beta-1.87-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzengol%2Foption_enum_with_get_mut" "/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/zengol/option_enum_with_get_mut on toolchain 1.86.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zengol/option_enum_with_get_mut
[INFO] finished tweaking git repo https://github.com/zengol/option_enum_with_get_mut
[INFO] tweaked toml for git repo https://github.com/zengol/option_enum_with_get_mut written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zengol/option_enum_with_get_mut 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" "+1.86.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fe4f0d4db845bd25f484d17b97f1641fd8f509db15ddef174dfc1a7ba793fbf
[INFO] running `Command { std: "docker" "start" "-a" "3fe4f0d4db845bd25f484d17b97f1641fd8f509db15ddef174dfc1a7ba793fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fe4f0d4db845bd25f484d17b97f1641fd8f509db15ddef174dfc1a7ba793fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fe4f0d4db845bd25f484d17b97f1641fd8f509db15ddef174dfc1a7ba793fbf", kill_on_drop: false }`
[INFO] [stdout] 3fe4f0d4db845bd25f484d17b97f1641fd8f509db15ddef174dfc1a7ba793fbf
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8cbf5482af61827ce8538d8bef92c3af550579f5fe5cc04e9a8f6b04ea2a0e9
[INFO] running `Command { std: "docker" "start" "-a" "b8cbf5482af61827ce8538d8bef92c3af550579f5fe5cc04e9a8f6b04ea2a0e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling option_enum_exercise_o1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `balance` is never read
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Account {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 13 |     balance: i32
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Account` 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 0.45s
[INFO] running `Command { std: "docker" "inspect" "b8cbf5482af61827ce8538d8bef92c3af550579f5fe5cc04e9a8f6b04ea2a0e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8cbf5482af61827ce8538d8bef92c3af550579f5fe5cc04e9a8f6b04ea2a0e9", kill_on_drop: false }`
[INFO] [stdout] b8cbf5482af61827ce8538d8bef92c3af550579f5fe5cc04e9a8f6b04ea2a0e9
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94f9d448d33365fe46db68c1dfcb28d8e329a3fa7cb01b09d0c9d6c38e38cfa0
[INFO] running `Command { std: "docker" "start" "-a" "94f9d448d33365fe46db68c1dfcb28d8e329a3fa7cb01b09d0c9d6c38e38cfa0", kill_on_drop: false }`
[INFO] [stderr]    Compiling option_enum_exercise_o1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `balance` is never read
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Account {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 13 |     balance: i32
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Account` 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 `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "94f9d448d33365fe46db68c1dfcb28d8e329a3fa7cb01b09d0c9d6c38e38cfa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94f9d448d33365fe46db68c1dfcb28d8e329a3fa7cb01b09d0c9d6c38e38cfa0", kill_on_drop: false }`
[INFO] [stdout] 94f9d448d33365fe46db68c1dfcb28d8e329a3fa7cb01b09d0c9d6c38e38cfa0
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f2db1ea3c569e45b67af7b6a4f945a1dffc7a996ca3c5949a6c32e5c3fd71903
[INFO] running `Command { std: "docker" "start" "-a" "f2db1ea3c569e45b67af7b6a4f945a1dffc7a996ca3c5949a6c32e5c3fd71903", kill_on_drop: false }`
[INFO] [stderr] warning: field `balance` is never read
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct Account {
[INFO] [stderr]    |        ------- field in this struct
[INFO] [stderr] 13 |     balance: i32
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Account` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `option_enum_exercise_o1` (bin "option_enum_exercise_o1" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/option_enum_exercise_o1-94772d275277c1ec)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f2db1ea3c569e45b67af7b6a4f945a1dffc7a996ca3c5949a6c32e5c3fd71903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2db1ea3c569e45b67af7b6a4f945a1dffc7a996ca3c5949a6c32e5c3fd71903", kill_on_drop: false }`
[INFO] [stdout] f2db1ea3c569e45b67af7b6a4f945a1dffc7a996ca3c5949a6c32e5c3fd71903