[INFO] fetching crate tailcall 1.0.1...
[INFO] testing tailcall-1.0.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate tailcall 1.0.1 into /workspace/builds/worker-0-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tailcall 1.0.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tailcall-impl v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51725998867c54a69c7996cd14a2a905184070a928a0b35756efa8d3904d8185
[INFO] running `Command { std: "docker" "start" "-a" "51725998867c54a69c7996cd14a2a905184070a928a0b35756efa8d3904d8185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51725998867c54a69c7996cd14a2a905184070a928a0b35756efa8d3904d8185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51725998867c54a69c7996cd14a2a905184070a928a0b35756efa8d3904d8185", kill_on_drop: false }`
[INFO] [stdout] 51725998867c54a69c7996cd14a2a905184070a928a0b35756efa8d3904d8185
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c89d4e5a867447e85353f03a2d3057ee9087508f8a3f48b8ec5175935aa9458
[INFO] running `Command { std: "docker" "start" "-a" "0c89d4e5a867447e85353f03a2d3057ee9087508f8a3f48b8ec5175935aa9458", 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 5.58s
[INFO] running `Command { std: "docker" "inspect" "0c89d4e5a867447e85353f03a2d3057ee9087508f8a3f48b8ec5175935aa9458", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c89d4e5a867447e85353f03a2d3057ee9087508f8a3f48b8ec5175935aa9458", kill_on_drop: false }`
[INFO] [stdout] 0c89d4e5a867447e85353f03a2d3057ee9087508f8a3f48b8ec5175935aa9458
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce83f7a59148d760ea26d0739588afd748ababdc7240543d973434c601561c75
[INFO] running `Command { std: "docker" "start" "-a" "ce83f7a59148d760ea26d0739588afd748ababdc7240543d973434c601561c75", 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 2.84s
[INFO] running `Command { std: "docker" "inspect" "ce83f7a59148d760ea26d0739588afd748ababdc7240543d973434c601561c75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce83f7a59148d760ea26d0739588afd748ababdc7240543d973434c601561c75", kill_on_drop: false }`
[INFO] [stdout] ce83f7a59148d760ea26d0739588afd748ababdc7240543d973434c601561c75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7761c6e5c39b33ba677023135d6ada76ea71b79d8c9679eb9bcc009e10565d63
[INFO] running `Command { std: "docker" "start" "-a" "7761c6e5c39b33ba677023135d6ada76ea71b79d8c9679eb9bcc009e10565d63", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tailcall-9555ee54fba11379)
[INFO] [stderr]      Running tests/correctness.rs (/opt/rustwide/target/debug/deps/correctness-5e10edffcd538f0f)
[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] [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] [stderr]      Running tests/correctness_option.rs (/opt/rustwide/target/debug/deps/correctness_option-8c0afa6ce7d34df8)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/correctness_result.rs (/opt/rustwide/target/debug/deps/correctness_result-fc7963130b6c7587)
[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] [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-22bc28fe8e4e31f4)
[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/lib.rs - (line 22) ... ok
[INFO] [stdout] test src/trampoline.rs - trampoline (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.29s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7761c6e5c39b33ba677023135d6ada76ea71b79d8c9679eb9bcc009e10565d63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7761c6e5c39b33ba677023135d6ada76ea71b79d8c9679eb9bcc009e10565d63", kill_on_drop: false }`
[INFO] [stdout] 7761c6e5c39b33ba677023135d6ada76ea71b79d8c9679eb9bcc009e10565d63