[INFO] fetching crate turingmachine-rs 0.2.0...
[INFO] testing turingmachine-rs-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate turingmachine-rs 0.2.0 into /workspace/builds/worker-109/source
[INFO] validating manifest of crates.io crate turingmachine-rs 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate turingmachine-rs 0.2.0
[INFO] finished tweaking crates.io crate turingmachine-rs 0.2.0
[INFO] tweaked toml for crates.io crate turingmachine-rs 0.2.0 written to /workspace/builds/worker-109/source/Cargo.toml
[INFO] crate crates.io crate turingmachine-rs 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa285badba4ae5e918e0ef5c10baf71aac5282d40b9018f361dd4613a1ef7131
[INFO] running `Command { std: "docker" "start" "-a" "fa285badba4ae5e918e0ef5c10baf71aac5282d40b9018f361dd4613a1ef7131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa285badba4ae5e918e0ef5c10baf71aac5282d40b9018f361dd4613a1ef7131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa285badba4ae5e918e0ef5c10baf71aac5282d40b9018f361dd4613a1ef7131", kill_on_drop: false }`
[INFO] [stdout] fa285badba4ae5e918e0ef5c10baf71aac5282d40b9018f361dd4613a1ef7131
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f56799a45dca58b7400d55ef373033b4c6e7e05a4b2846134e6795db25a8df4d
[INFO] running `Command { std: "docker" "start" "-a" "f56799a45dca58b7400d55ef373033b4c6e7e05a4b2846134e6795db25a8df4d", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling turingmachine-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "f56799a45dca58b7400d55ef373033b4c6e7e05a4b2846134e6795db25a8df4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f56799a45dca58b7400d55ef373033b4c6e7e05a4b2846134e6795db25a8df4d", kill_on_drop: false }`
[INFO] [stdout] f56799a45dca58b7400d55ef373033b4c6e7e05a4b2846134e6795db25a8df4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ed42ae941ae8a3983cf67ab655d7190a0097b0bbcea1e472e21464d81c115de
[INFO] running `Command { std: "docker" "start" "-a" "0ed42ae941ae8a3983cf67ab655d7190a0097b0bbcea1e472e21464d81c115de", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling turingmachine-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `iter::Cycle`
[INFO] [stdout]   --> examples/divisibility.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::{fmt, iter::Cycle};
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MarkedOne`
[INFO] [stdout]   --> examples/divisibility.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     MarkedOne,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Halt`
[INFO] [stdout]   --> examples/divisibility.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Halt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Found1InDenominator`
[INFO] [stdout]   --> examples/divisibility.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Found1InDenominator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Found1InNuminator`
[INFO] [stdout]   --> examples/divisibility.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     Found1InNuminator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "0ed42ae941ae8a3983cf67ab655d7190a0097b0bbcea1e472e21464d81c115de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ed42ae941ae8a3983cf67ab655d7190a0097b0bbcea1e472e21464d81c115de", kill_on_drop: false }`
[INFO] [stdout] 0ed42ae941ae8a3983cf67ab655d7190a0097b0bbcea1e472e21464d81c115de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8be342f4f460af86c54a543187fad82ad7f8cac5d68f96217309d7fdfcbdfcfc
[INFO] running `Command { std: "docker" "start" "-a" "8be342f4f460af86c54a543187fad82ad7f8cac5d68f96217309d7fdfcbdfcfc", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] warning: unused import: `iter::Cycle`
[INFO] [stderr]   --> examples/divisibility.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::{fmt, iter::Cycle};
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MarkedOne`
[INFO] [stderr]   --> examples/divisibility.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     MarkedOne,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Halt`
[INFO] [stderr]   --> examples/divisibility.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Halt,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Found1InDenominator`
[INFO] [stderr]   --> examples/divisibility.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     Found1InDenominator,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Found1InNuminator`
[INFO] [stderr]   --> examples/divisibility.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     Found1InNuminator,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `turingmachine-rs` (example "divisibility") generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/turingmachine_rs-193c76737261b0b6)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/exactly-two.rs (/opt/rustwide/target/debug/deps/exactly_two-5d566f831c54e946)
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::fetch_cursor ... ok
[INFO] [stdout] test tests::set_cursor ... ok
[INFO] [stdout] test tests::turing_into_vec ... ok
[INFO] [stdout] test tests::turing_stepping ... ok
[INFO] [stdout] test tests::turing_tape_new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 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 exactly_two_proper_output ... 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/replace-ones.rs (/opt/rustwide/target/debug/deps/replace_ones-78bbc0e4481f4931)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test replace_ones_proper_output ... 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 turingmachine-rs
[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" "8be342f4f460af86c54a543187fad82ad7f8cac5d68f96217309d7fdfcbdfcfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8be342f4f460af86c54a543187fad82ad7f8cac5d68f96217309d7fdfcbdfcfc", kill_on_drop: false }`
[INFO] [stdout] 8be342f4f460af86c54a543187fad82ad7f8cac5d68f96217309d7fdfcbdfcfc