[INFO] fetching crate turingmachine-rs 0.2.0...
[INFO] checking turingmachine-rs-0.2.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate turingmachine-rs 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate turingmachine-rs 0.2.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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-1-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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] 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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3290b515fd4d95bd780cdd59bfcd54f02fe8de6cdcc6ad2ed29664d8879c96f7
[INFO] running `Command { std: "docker" "start" "-a" "3290b515fd4d95bd780cdd59bfcd54f02fe8de6cdcc6ad2ed29664d8879c96f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3290b515fd4d95bd780cdd59bfcd54f02fe8de6cdcc6ad2ed29664d8879c96f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3290b515fd4d95bd780cdd59bfcd54f02fe8de6cdcc6ad2ed29664d8879c96f7", kill_on_drop: false }`
[INFO] [stdout] 3290b515fd4d95bd780cdd59bfcd54f02fe8de6cdcc6ad2ed29664d8879c96f7
[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=forbid -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 938591b76cebfadd1443b2229e0eefbe54a600dec147af04c25ead2447e1ea0c
[INFO] running `Command { std: "docker" "start" "-a" "938591b76cebfadd1443b2229e0eefbe54a600dec147af04c25ead2447e1ea0c", 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]     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: variants `MarkedOne` and `Halt` are never constructed
[INFO] [stdout]   --> examples/divisibility.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | enum Alphabet {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 22 |     MarkedOne,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 23 |     Halt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Alphabet` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Found1InDenominator` and `Found1InNuminator` are never constructed
[INFO] [stdout]   --> examples/divisibility.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | enum States {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 45 |     Found1InDenominator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 46 |     Found1InNuminator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `States` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "938591b76cebfadd1443b2229e0eefbe54a600dec147af04c25ead2447e1ea0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938591b76cebfadd1443b2229e0eefbe54a600dec147af04c25ead2447e1ea0c", kill_on_drop: false }`
[INFO] [stdout] 938591b76cebfadd1443b2229e0eefbe54a600dec147af04c25ead2447e1ea0c