[INFO] fetching crate poi 0.23.0...
[INFO] testing poi-0.23.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate poi 0.23.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate poi 0.23.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate poi 0.23.0
[INFO] finished tweaking crates.io crate poi 0.23.0
[INFO] tweaked toml for crates.io crate poi 0.23.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate poi 0.23.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 241f4a81a7a903a749229c4706b83e458fbbe3eada264ea8a5eab02a0ccc4ab0
[INFO] running `Command { std: "docker" "start" "-a" "241f4a81a7a903a749229c4706b83e458fbbe3eada264ea8a5eab02a0ccc4ab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "241f4a81a7a903a749229c4706b83e458fbbe3eada264ea8a5eab02a0ccc4ab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "241f4a81a7a903a749229c4706b83e458fbbe3eada264ea8a5eab02a0ccc4ab0", kill_on_drop: false }`
[INFO] [stdout] 241f4a81a7a903a749229c4706b83e458fbbe3eada264ea8a5eab02a0ccc4ab0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06ace4d9153716492a022e1c29c17502c40225763fab0fa9d2784b4f1a9f9c15
[INFO] running `Command { std: "docker" "start" "-a" "06ace4d9153716492a022e1c29c17502c40225763fab0fa9d2784b4f1a9f9c15", kill_on_drop: false }`
[INFO] [stderr]    Compiling range v1.0.0
[INFO] [stderr]    Compiling read_token v1.0.0
[INFO] [stderr]    Compiling piston_meta v2.0.1
[INFO] [stderr]    Compiling poi v0.23.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/expr.rs:291:21
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     let _ = &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/expr.rs:299:21
[INFO] [stdout]     |
[INFO] [stdout] 299 |                     &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 299 |                     let _ = &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
[INFO] running `Command { std: "docker" "inspect" "06ace4d9153716492a022e1c29c17502c40225763fab0fa9d2784b4f1a9f9c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06ace4d9153716492a022e1c29c17502c40225763fab0fa9d2784b4f1a9f9c15", kill_on_drop: false }`
[INFO] [stdout] 06ace4d9153716492a022e1c29c17502c40225763fab0fa9d2784b4f1a9f9c15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57c24d8f49a6c97f862f041855080f4875ae02e78d6ee968d0205115f927e7fb
[INFO] running `Command { std: "docker" "start" "-a" "57c24d8f49a6c97f862f041855080f4875ae02e78d6ee968d0205115f927e7fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling levenshtein v1.0.4
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/expr.rs:291:21
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     let _ = &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/expr.rs:299:21
[INFO] [stdout]     |
[INFO] [stdout] 299 |                     &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 299 |                     let _ = &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling poi v0.23.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/expr.rs:291:21
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     let _ = &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/expr.rs:299:21
[INFO] [stdout]     |
[INFO] [stdout] 299 |                     &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 299 |                     let _ = &b[i].display(w, false, rule)?;
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.80s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/poi-e909c5fb7580f3a4)
[INFO] running `Command { std: "docker" "inspect" "57c24d8f49a6c97f862f041855080f4875ae02e78d6ee968d0205115f927e7fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57c24d8f49a6c97f862f041855080f4875ae02e78d6ee968d0205115f927e7fb", kill_on_drop: false }`
[INFO] [stdout] 57c24d8f49a6c97f862f041855080f4875ae02e78d6ee968d0205115f927e7fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b51762240b1664543214f4f132171b8bb7d3fe8542f42a342ef98daccd5fe9fe
[INFO] running `Command { std: "docker" "start" "-a" "b51762240b1664543214f4f132171b8bb7d3fe8542f42a342ef98daccd5fe9fe", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/expr.rs:291:21
[INFO] [stderr]     |
[INFO] [stderr] 291 |                     &b[i].display(w, false, rule)?;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 291 |                     let _ = &b[i].display(w, false, rule)?;
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/expr.rs:299:21
[INFO] [stderr]     |
[INFO] [stderr] 299 |                     &b[i].display(w, false, rule)?;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 299 |                     let _ = &b[i].display(w, false, rule)?;
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `poi` (lib) generated 2 warnings
[INFO] [stderr] warning: `poi` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/poi-e909c5fb7580f3a4)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test expr::tests::constraints ... ok
[INFO] [stdout] test expr::tests::parens ... ok
[INFO] [stdout] test tests::constraints ... ok
[INFO] [stdout] test parsing::tests::test_not_ret_var ... ok
[INFO] [stdout] test parsing::tests::test_ret_bool ... ok
[INFO] [stdout] test tests::path_not_id ... ok
[INFO] [stdout] test tests::comp_id ... ok
[INFO] [stdout] test tests::apply_not ... ok
[INFO] [stdout] test tests::comp_not_not ... ok
[INFO] [stdout] test tests::path_not_not ... ok
[INFO] [stdout] test tests::eval_var ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.44s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests poi
[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" "b51762240b1664543214f4f132171b8bb7d3fe8542f42a342ef98daccd5fe9fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b51762240b1664543214f4f132171b8bb7d3fe8542f42a342ef98daccd5fe9fe", kill_on_drop: false }`
[INFO] [stdout] b51762240b1664543214f4f132171b8bb7d3fe8542f42a342ef98daccd5fe9fe