[INFO] fetching crate turingmachine-rs 0.2.0...
[INFO] checking turingmachine-rs-0.2.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate turingmachine-rs 0.2.0 into /workspace/builds/worker-55/source
[INFO] validating manifest of crates.io crate turingmachine-rs 0.2.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-55/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b08fcfeccb0bb22cf04abd96658154635cf454ce2ac1a1c716f982a95fd7f86
[INFO] running `Command { std: "docker" "start" "-a" "2b08fcfeccb0bb22cf04abd96658154635cf454ce2ac1a1c716f982a95fd7f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b08fcfeccb0bb22cf04abd96658154635cf454ce2ac1a1c716f982a95fd7f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b08fcfeccb0bb22cf04abd96658154635cf454ce2ac1a1c716f982a95fd7f86", kill_on_drop: false }`
[INFO] [stdout] 2b08fcfeccb0bb22cf04abd96658154635cf454ce2ac1a1c716f982a95fd7f86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] beb16c1604e4c03cfcb91c2252ca74685f5aa2aaa9114329658cd6a900be7e70
[INFO] running `Command { std: "docker" "start" "-a" "beb16c1604e4c03cfcb91c2252ca74685f5aa2aaa9114329658cd6a900be7e70", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking 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 dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "beb16c1604e4c03cfcb91c2252ca74685f5aa2aaa9114329658cd6a900be7e70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beb16c1604e4c03cfcb91c2252ca74685f5aa2aaa9114329658cd6a900be7e70", kill_on_drop: false }`
[INFO] [stdout] beb16c1604e4c03cfcb91c2252ca74685f5aa2aaa9114329658cd6a900be7e70