[INFO] fetching crate tailcall 1.0.1...
[INFO] testing tailcall-1.0.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate tailcall 1.0.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tailcall 1.0.1
[INFO] finished tweaking crates.io crate tailcall 1.0.1
[INFO] tweaked toml for crates.io crate tailcall 1.0.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tailcall 1.0.1 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 17 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d2fdc4d10a66a85752a5efe1e555af5c127423418f5bfcb7b9858e5598f36c46
[INFO] running `Command { std: "docker" "start" "-a" "d2fdc4d10a66a85752a5efe1e555af5c127423418f5bfcb7b9858e5598f36c46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2fdc4d10a66a85752a5efe1e555af5c127423418f5bfcb7b9858e5598f36c46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2fdc4d10a66a85752a5efe1e555af5c127423418f5bfcb7b9858e5598f36c46", kill_on_drop: false }`
[INFO] [stdout] d2fdc4d10a66a85752a5efe1e555af5c127423418f5bfcb7b9858e5598f36c46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d43f987d5c605591737b099169372386118bca93b23d14043d4fd8f332e1678e
[INFO] running `Command { std: "docker" "start" "-a" "d43f987d5c605591737b099169372386118bca93b23d14043d4fd8f332e1678e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling tailcall-impl v1.0.1
[INFO] [stderr]    Compiling tailcall v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.52s
[INFO] running `Command { std: "docker" "inspect" "d43f987d5c605591737b099169372386118bca93b23d14043d4fd8f332e1678e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d43f987d5c605591737b099169372386118bca93b23d14043d4fd8f332e1678e", kill_on_drop: false }`
[INFO] [stdout] d43f987d5c605591737b099169372386118bca93b23d14043d4fd8f332e1678e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 9048f69cd12fe5b8c5919c511d622058102dc0bf809ec2c70aee7362fa2396aa
[INFO] running `Command { std: "docker" "start" "-a" "9048f69cd12fe5b8c5919c511d622058102dc0bf809ec2c70aee7362fa2396aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling tailcall v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.27s
[INFO] running `Command { std: "docker" "inspect" "9048f69cd12fe5b8c5919c511d622058102dc0bf809ec2c70aee7362fa2396aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9048f69cd12fe5b8c5919c511d622058102dc0bf809ec2c70aee7362fa2396aa", kill_on_drop: false }`
[INFO] [stdout] 9048f69cd12fe5b8c5919c511d622058102dc0bf809ec2c70aee7362fa2396aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 22c8161baca72e84e52d289342740020bec86e789692a1ffe0be0519422923dd
[INFO] running `Command { std: "docker" "start" "-a" "22c8161baca72e84e52d289342740020bec86e789692a1ffe0be0519422923dd", 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/tailcall-c3bea29d9c5c007c)
[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] [stderr]      Running tests/correctness.rs (/opt/rustwide/target/debug/deps/correctness-1766562317aed9ba)
[INFO] [stderr]      Running tests/correctness_option.rs (/opt/rustwide/target/debug/deps/correctness_option-ca8d24999de996b2)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_factorial_correctness ... ok
[INFO] [stdout] test test_memoized_factorial_correctness ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test factorial_option_runs ... 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]      Running tests/correctness_result.rs (/opt/rustwide/target/debug/deps/correctness_result-c7fb5bae53070461)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test factorial_result_runs ... 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]      Running tests/stack_depth.rs (/opt/rustwide/target/debug/deps/stack_depth-e42f7f2fca464db0)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_tail_recusive_calls_do_not_result_in_new_stack_frames ... 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 tailcall
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 41) - compile fail ... ok
[INFO] [stdout] test src/trampoline.rs - trampoline (line 11) ... ok
[INFO] [stdout] test src/lib.rs - (line 22) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.53s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "22c8161baca72e84e52d289342740020bec86e789692a1ffe0be0519422923dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22c8161baca72e84e52d289342740020bec86e789692a1ffe0be0519422923dd", kill_on_drop: false }`
[INFO] [stdout] 22c8161baca72e84e52d289342740020bec86e789692a1ffe0be0519422923dd