[INFO] fetching crate mutstr 0.4.0...
[INFO] testing mutstr-0.4.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate mutstr 0.4.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate mutstr 0.4.0
[INFO] finished tweaking crates.io crate mutstr 0.4.0
[INFO] tweaked toml for crates.io crate mutstr 0.4.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutstr 0.4.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0b4f73626d4c3b61f5c5b89aa30f7f28b63474055d2c92726a8c5704d01f3d3
[INFO] running `Command { std: "docker" "start" "-a" "d0b4f73626d4c3b61f5c5b89aa30f7f28b63474055d2c92726a8c5704d01f3d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0b4f73626d4c3b61f5c5b89aa30f7f28b63474055d2c92726a8c5704d01f3d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0b4f73626d4c3b61f5c5b89aa30f7f28b63474055d2c92726a8c5704d01f3d3", kill_on_drop: false }`
[INFO] [stdout] d0b4f73626d4c3b61f5c5b89aa30f7f28b63474055d2c92726a8c5704d01f3d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f182f052051a5b5ab862c2817072af10c56c2f046e132166657047f34fcb10a
[INFO] running `Command { std: "docker" "start" "-a" "4f182f052051a5b5ab862c2817072af10c56c2f046e132166657047f34fcb10a", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutstr v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "4f182f052051a5b5ab862c2817072af10c56c2f046e132166657047f34fcb10a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f182f052051a5b5ab862c2817072af10c56c2f046e132166657047f34fcb10a", kill_on_drop: false }`
[INFO] [stdout] 4f182f052051a5b5ab862c2817072af10c56c2f046e132166657047f34fcb10a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60d604a030dbfca9ec00da766f0f742efbb40558415f9aafaec6e1a6403ac9fc
[INFO] running `Command { std: "docker" "start" "-a" "60d604a030dbfca9ec00da766f0f742efbb40558415f9aafaec6e1a6403ac9fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutstr v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "60d604a030dbfca9ec00da766f0f742efbb40558415f9aafaec6e1a6403ac9fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60d604a030dbfca9ec00da766f0f742efbb40558415f9aafaec6e1a6403ac9fc", kill_on_drop: false }`
[INFO] [stdout] 60d604a030dbfca9ec00da766f0f742efbb40558415f9aafaec6e1a6403ac9fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 393f4d3228eba7b64c595e7676047fb4e53a61aedd2e8b15d183280c5a547bc9
[INFO] running `Command { std: "docker" "start" "-a" "393f4d3228eba7b64c595e7676047fb4e53a61aedd2e8b15d183280c5a547bc9", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mutstr-d904a1c7658eb670)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test implementations::add_assign ... ok
[INFO] [stdout] test implementations::as_mut_str ... ok
[INFO] [stdout] test implementations::as_ref_str ... ok
[INFO] [stdout] test implementations::as_ref_u8 ... ok
[INFO] [stdout] test implementations::display ... ok
[INFO] [stdout] test implementations::default ... ok
[INFO] [stdout] test implementations::from_slice ... ok
[INFO] [stdout] test implementations::range ... ok
[INFO] [stdout] test implementations::range_from ... ok
[INFO] [stdout] test implementations::sub_assign_extended ... ok
[INFO] [stdout] test implementations::sub_assign ... ok
[INFO] [stdout] test implementations::range_to ... ok
[INFO] [stdout] test implementations::range_full ... ok
[INFO] [stdout] test implementations::as_mut_u8 ... ok
[INFO] [stdout] test implementations::from_str ... ok
[INFO] [stderr]    Doc-tests mutstr
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test src/lib.rs - mutstr::as_str (line 190) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::layout (line 134) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::size (line 106) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::as_bytes (line 150) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::clear (line 271) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::push (line 239) ... ok
[INFO] [stdout] test src/lib.rs - mutstr (line 62) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::is_empty (line 121) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::as_bytes_mut (line 166) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::ptr (line 77) ... ok
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::ptr_mut (line 90) ... ok
[INFO] [stdout] test src/lib.rs - mutstr::replace_with (line 212) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.97s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "393f4d3228eba7b64c595e7676047fb4e53a61aedd2e8b15d183280c5a547bc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "393f4d3228eba7b64c595e7676047fb4e53a61aedd2e8b15d183280c5a547bc9", kill_on_drop: false }`
[INFO] [stdout] 393f4d3228eba7b64c595e7676047fb4e53a61aedd2e8b15d183280c5a547bc9