[INFO] fetching crate fast-concat 1.0.2...
[INFO] testing fast-concat-1.0.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate fast-concat 1.0.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate fast-concat 1.0.2
[INFO] finished tweaking crates.io crate fast-concat 1.0.2
[INFO] tweaked toml for crates.io crate fast-concat 1.0.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fast-concat 1.0.2 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] crate crates.io crate fast-concat 1.0.2 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" "+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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 02ff872c11d1e2a211cd4e4012ca032b4bd28929b2aa42d01e716d6fd29d117a
[INFO] running `Command { std: "docker" "start" "-a" "02ff872c11d1e2a211cd4e4012ca032b4bd28929b2aa42d01e716d6fd29d117a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02ff872c11d1e2a211cd4e4012ca032b4bd28929b2aa42d01e716d6fd29d117a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02ff872c11d1e2a211cd4e4012ca032b4bd28929b2aa42d01e716d6fd29d117a", kill_on_drop: false }`
[INFO] [stdout] 02ff872c11d1e2a211cd4e4012ca032b4bd28929b2aa42d01e716d6fd29d117a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 4f0254c77857b4a34f287d764534b6700bf87ac5df004198aed94e033cfafa0e
[INFO] running `Command { std: "docker" "start" "-a" "4f0254c77857b4a34f287d764534b6700bf87ac5df004198aed94e033cfafa0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling fast-concat-macro v1.0.2
[INFO] [stderr]    Compiling fast-concat v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.91s
[INFO] running `Command { std: "docker" "inspect" "4f0254c77857b4a34f287d764534b6700bf87ac5df004198aed94e033cfafa0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f0254c77857b4a34f287d764534b6700bf87ac5df004198aed94e033cfafa0e", kill_on_drop: false }`
[INFO] [stdout] 4f0254c77857b4a34f287d764534b6700bf87ac5df004198aed94e033cfafa0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5a9f035b8acce4ea46a1489fe6fd15b8d19eb19ae9458b1ed77945aaaaee68e8
[INFO] running `Command { std: "docker" "start" "-a" "5a9f035b8acce4ea46a1489fe6fd15b8d19eb19ae9458b1ed77945aaaaee68e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling clap_lex v0.7.4
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling is-terminal v0.4.15
[INFO] [stderr]    Compiling clap_builder v4.5.29
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling oorandom v11.1.4
[INFO] [stderr]    Compiling once_cell v1.20.3
[INFO] [stderr]    Compiling constcat v0.6.0
[INFO] [stderr]    Compiling string_concat v0.0.1
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling clap v4.5.29
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling fast-concat v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 31.11s
[INFO] running `Command { std: "docker" "inspect" "5a9f035b8acce4ea46a1489fe6fd15b8d19eb19ae9458b1ed77945aaaaee68e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a9f035b8acce4ea46a1489fe6fd15b8d19eb19ae9458b1ed77945aaaaee68e8", kill_on_drop: false }`
[INFO] [stdout] 5a9f035b8acce4ea46a1489fe6fd15b8d19eb19ae9458b1ed77945aaaaee68e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 956ead5da4eb7fbada654db10b9e0b3269afa9a76d2e077fa0f4b51abe329c00
[INFO] running `Command { std: "docker" "start" "-a" "956ead5da4eb7fbada654db10b9e0b3269afa9a76d2e077fa0f4b51abe329c00", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fast_concat-3376eca9d4a6c1b6)
[INFO] [stderr]    Doc-tests fast_concat
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::concat ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - fast_concat (line 90) ... ok
[INFO] [stdout] test src/lib.rs - fast_concat (line 46) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.43s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "956ead5da4eb7fbada654db10b9e0b3269afa9a76d2e077fa0f4b51abe329c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "956ead5da4eb7fbada654db10b9e0b3269afa9a76d2e077fa0f4b51abe329c00", kill_on_drop: false }`
[INFO] [stdout] 956ead5da4eb7fbada654db10b9e0b3269afa9a76d2e077fa0f4b51abe329c00