[INFO] cloning repository https://github.com/mfkimbell/rust-s-notation-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mfkimbell/rust-s-notation-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfkimbell%2Frust-s-notation-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfkimbell%2Frust-s-notation-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb0d760f14877d95e49079232d51a4434d9bcdb8
[INFO] checking mfkimbell/rust-s-notation-parser against try#863511eff87e66198b396935f3b5c8a543022f53 for pr-139493-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfkimbell%2Frust-s-notation-parser" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
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[INFO] started tweaking git repo https://github.com/mfkimbell/rust-s-notation-parser
[INFO] finished tweaking git repo https://github.com/mfkimbell/rust-s-notation-parser
[INFO] tweaked toml for git repo https://github.com/mfkimbell/rust-s-notation-parser written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mfkimbell/rust-s-notation-parser on toolchain 863511eff87e66198b396935f3b5c8a543022f53
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+863511eff87e66198b396935f3b5c8a543022f53" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mfkimbell/rust-s-notation-parser 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" "+863511eff87e66198b396935f3b5c8a543022f53" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+863511eff87e66198b396935f3b5c8a543022f53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cc4218a24ad882ae538dcca0dfeb11309dafd7a6c92aaf7f1afc385d6005d98
[INFO] running `Command { std: "docker" "start" "-a" "4cc4218a24ad882ae538dcca0dfeb11309dafd7a6c92aaf7f1afc385d6005d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cc4218a24ad882ae538dcca0dfeb11309dafd7a6c92aaf7f1afc385d6005d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cc4218a24ad882ae538dcca0dfeb11309dafd7a6c92aaf7f1afc385d6005d98", kill_on_drop: false }`
[INFO] [stdout] 4cc4218a24ad882ae538dcca0dfeb11309dafd7a6c92aaf7f1afc385d6005d98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+863511eff87e66198b396935f3b5c8a543022f53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aaf20e0e6a09a9312a66f4255a9b813c18c3b7bf48dc73184971d7a48df8ad2d
[INFO] running `Command { std: "docker" "start" "-a" "aaf20e0e6a09a9312a66f4255a9b813c18c3b7bf48dc73184971d7a48df8ad2d", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::error`
[INFO] [stdout]   --> src/lib.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     use std::error;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error`
[INFO] [stdout]   --> src/lib.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     use std::error;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:548:13
[INFO] [stdout]     |
[INFO] [stdout] 379 | /             match nexttok {
[INFO] [stdout] 380 | |                 "+" => {
[INFO] [stdout] 381 | |                     expect(toks, nexttok); // This should remove the "+" from the front of toks
[INFO] [stdout] 382 | |                     let arg1 = parse_exp(toks); // We recursively parse the first arg of "+"
[INFO] [stdout] ...   |
[INFO] [stdout] 547 | |             }
[INFO] [stdout]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 548 |               std::rc::Rc::new(ErrorExp)
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:548:13
[INFO] [stdout]     |
[INFO] [stdout] 379 | /             match nexttok {
[INFO] [stdout] 380 | |                 "+" => {
[INFO] [stdout] 381 | |                     expect(toks, nexttok); // This should remove the "+" from the front of toks
[INFO] [stdout] 382 | |                     let arg1 = parse_exp(toks); // We recursively parse the first arg of "+"
[INFO] [stdout] ...   |
[INFO] [stdout] 547 | |             }
[INFO] [stdout]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 548 |               std::rc::Rc::new(ErrorExp)
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.97s
[INFO] running `Command { std: "docker" "inspect" "aaf20e0e6a09a9312a66f4255a9b813c18c3b7bf48dc73184971d7a48df8ad2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaf20e0e6a09a9312a66f4255a9b813c18c3b7bf48dc73184971d7a48df8ad2d", kill_on_drop: false }`
[INFO] [stdout] aaf20e0e6a09a9312a66f4255a9b813c18c3b7bf48dc73184971d7a48df8ad2d