[INFO] fetching crate mangle-engine 0.1.1...
[INFO] testing mangle-engine-0.1.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate mangle-engine 0.1.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mangle-engine 0.1.1
[INFO] finished tweaking crates.io crate mangle-engine 0.1.1
[INFO] tweaked toml for crates.io crate mangle-engine 0.1.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mangle-engine 0.1.1 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 19 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-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] 7adfbcb97232a06975225c8720ca7f59d7077a41de056590dfbb30d157bc5782
[INFO] running `Command { std: "docker" "start" "-a" "7adfbcb97232a06975225c8720ca7f59d7077a41de056590dfbb30d157bc5782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7adfbcb97232a06975225c8720ca7f59d7077a41de056590dfbb30d157bc5782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7adfbcb97232a06975225c8720ca7f59d7077a41de056590dfbb30d157bc5782", kill_on_drop: false }`
[INFO] [stdout] 7adfbcb97232a06975225c8720ca7f59d7077a41de056590dfbb30d157bc5782
[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] b592d75b4303fb1d2590c44390a9b28c60b340c6132981afab0918efe1535795
[INFO] running `Command { std: "docker" "start" "-a" "b592d75b4303fb1d2590c44390a9b28c60b340c6132981afab0918efe1535795", kill_on_drop: false }`
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling bumpalo v3.19.0
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling googletest_macro v0.11.0
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling googletest v0.11.0
[INFO] [stderr]    Compiling mangle-ast v0.1.1
[INFO] [stderr]    Compiling mangle-factstore v0.1.1
[INFO] [stderr]    Compiling mangle-analysis v0.1.1
[INFO] [stderr]    Compiling mangle-engine v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Naive` is never constructed
[INFO] [stdout]   --> src/naive.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Naive {}
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.43s
[INFO] running `Command { std: "docker" "inspect" "b592d75b4303fb1d2590c44390a9b28c60b340c6132981afab0918efe1535795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b592d75b4303fb1d2590c44390a9b28c60b340c6132981afab0918efe1535795", kill_on_drop: false }`
[INFO] [stdout] b592d75b4303fb1d2590c44390a9b28c60b340c6132981afab0918efe1535795
[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] 217926edd4088179408e52f16c673b2081d6d8ae1134b37ca0c7b11d6222a36a
[INFO] running `Command { std: "docker" "start" "-a" "217926edd4088179408e52f16c673b2081d6d8ae1134b37ca0c7b11d6222a36a", kill_on_drop: false }`
[INFO] [stderr]    Compiling mangle-engine v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Naive` is never constructed
[INFO] [stdout]   --> src/naive.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Naive {}
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "217926edd4088179408e52f16c673b2081d6d8ae1134b37ca0c7b11d6222a36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "217926edd4088179408e52f16c673b2081d6d8ae1134b37ca0c7b11d6222a36a", kill_on_drop: false }`
[INFO] [stdout] 217926edd4088179408e52f16c673b2081d6d8ae1134b37ca0c7b11d6222a36a
[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] 9026d5ecbcf1cf11c9438ae7f0fc35e16b016ee359f07baef0b4e5edb2be4723
[INFO] running `Command { std: "docker" "start" "-a" "9026d5ecbcf1cf11c9438ae7f0fc35e16b016ee359f07baef0b4e5edb2be4723", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Naive` is never constructed
[INFO] [stderr]   --> src/naive.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Naive {}
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mangle-engine` (lib) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mangle_engine-c2dd1ec4c3541da7)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test naive::test::test_naive ... 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] [stderr]    Doc-tests mangle_engine
[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" "9026d5ecbcf1cf11c9438ae7f0fc35e16b016ee359f07baef0b4e5edb2be4723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9026d5ecbcf1cf11c9438ae7f0fc35e16b016ee359f07baef0b4e5edb2be4723", kill_on_drop: false }`
[INFO] [stdout] 9026d5ecbcf1cf11c9438ae7f0fc35e16b016ee359f07baef0b4e5edb2be4723