[INFO] cloning repository https://github.com/hasegawa-101/Rust-Book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hasegawa-101/Rust-Book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasegawa-101%2FRust-Book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasegawa-101%2FRust-Book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67b4eb3e056a457ce8e7c95ef4e98c3a3dc10396
[INFO] testing hasegawa-101/Rust-Book against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasegawa-101%2FRust-Book" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hasegawa-101/Rust-Book
[INFO] finished tweaking git repo https://github.com/hasegawa-101/Rust-Book
[INFO] tweaked toml for git repo https://github.com/hasegawa-101/Rust-Book written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hasegawa-101/Rust-Book on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hasegawa-101/Rust-Book 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1c4b46cbb3cf90cef80cbb80a888f7cbd534ccfd0086b473fbbd7860d894f93
[INFO] running `Command { std: "docker" "start" "-a" "d1c4b46cbb3cf90cef80cbb80a888f7cbd534ccfd0086b473fbbd7860d894f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1c4b46cbb3cf90cef80cbb80a888f7cbd534ccfd0086b473fbbd7860d894f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1c4b46cbb3cf90cef80cbb80a888f7cbd534ccfd0086b473fbbd7860d894f93", kill_on_drop: false }`
[INFO] [stdout] d1c4b46cbb3cf90cef80cbb80a888f7cbd534ccfd0086b473fbbd7860d894f93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 8ec5c9f6e623fcc8f5b8cb2582d96ed4ecef42032c80d8da5802f7b66e93664d
[INFO] running `Command { std: "docker" "start" "-a" "8ec5c9f6e623fcc8f5b8cb2582d96ed4ecef42032c80d8da5802f7b66e93664d", kill_on_drop: false }`
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `spaces`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let spaces = spaces.len();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_POINTS` is never used
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const MAX_POINTS: u32 = 100_000;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "8ec5c9f6e623fcc8f5b8cb2582d96ed4ecef42032c80d8da5802f7b66e93664d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ec5c9f6e623fcc8f5b8cb2582d96ed4ecef42032c80d8da5802f7b66e93664d", kill_on_drop: false }`
[INFO] [stdout] 8ec5c9f6e623fcc8f5b8cb2582d96ed4ecef42032c80d8da5802f7b66e93664d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d7a6b41c81945614829e46a12ceb0a50870be0f8197a4e317f525ba10731e349
[INFO] running `Command { std: "docker" "start" "-a" "d7a6b41c81945614829e46a12ceb0a50870be0f8197a4e317f525ba10731e349", kill_on_drop: false }`
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `spaces`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let spaces = spaces.len();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_POINTS` is never used
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const MAX_POINTS: u32 = 100_000;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "d7a6b41c81945614829e46a12ceb0a50870be0f8197a4e317f525ba10731e349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7a6b41c81945614829e46a12ceb0a50870be0f8197a4e317f525ba10731e349", kill_on_drop: false }`
[INFO] [stdout] d7a6b41c81945614829e46a12ceb0a50870be0f8197a4e317f525ba10731e349
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 31411f7f6b350cd2a12ff209ce7496f3f7da7ee1dd5e0dd1b94e50f6a1b719a7
[INFO] running `Command { std: "docker" "start" "-a" "31411f7f6b350cd2a12ff209ce7496f3f7da7ee1dd5e0dd1b94e50f6a1b719a7", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `spaces`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let spaces = spaces.len();
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `MAX_POINTS` is never used
[INFO] [stderr]   --> src/main.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 | const MAX_POINTS: u32 = 100_000;
[INFO] [stderr]    |       ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `variables` (bin "variables" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/variables-fffe2152dd402d04)
[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" "31411f7f6b350cd2a12ff209ce7496f3f7da7ee1dd5e0dd1b94e50f6a1b719a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31411f7f6b350cd2a12ff209ce7496f3f7da7ee1dd5e0dd1b94e50f6a1b719a7", kill_on_drop: false }`
[INFO] [stdout] 31411f7f6b350cd2a12ff209ce7496f3f7da7ee1dd5e0dd1b94e50f6a1b719a7