[INFO] fetching crate tongue 0.1.2...
[INFO] testing tongue-0.1.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate tongue 0.1.2 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate tongue 0.1.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tongue 0.1.2
[INFO] finished tweaking crates.io crate tongue 0.1.2
[INFO] tweaked toml for crates.io crate tongue 0.1.2 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba5322c02094d73b93d89b59f629a3f88d869bc4e4dd32d2bd7b145e28c7f904
[INFO] running `Command { std: "docker" "start" "-a" "ba5322c02094d73b93d89b59f629a3f88d869bc4e4dd32d2bd7b145e28c7f904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba5322c02094d73b93d89b59f629a3f88d869bc4e4dd32d2bd7b145e28c7f904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba5322c02094d73b93d89b59f629a3f88d869bc4e4dd32d2bd7b145e28c7f904", kill_on_drop: false }`
[INFO] [stdout] ba5322c02094d73b93d89b59f629a3f88d869bc4e4dd32d2bd7b145e28c7f904
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 068ffb6c44d79795c2cec4cb759f518e9a29f10c16c80e73690e925e94258e82
[INFO] running `Command { std: "docker" "start" "-a" "068ffb6c44d79795c2cec4cb759f518e9a29f10c16c80e73690e925e94258e82", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling tongue v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/tongue/terminal.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |         term.c_cflag |= (libc::CS8);
[INFO] [stdout]    |                         ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         term.c_cflag |= (libc::CS8);
[INFO] [stdout] 55 +         term.c_cflag |= libc::CS8;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/tongue/evaluator.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Ok(n) => {},
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tongue/evaluator.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn _eval(mut n: Node, config: &mut Config) {
[INFO] [stdout]    |          ----^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/tongue/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     handle.read(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tongue/util.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     buf_writer.write(s.as_bytes());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tongue/util.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     buf_writer.flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]   --> src/tongue/builtin.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         env::set_current_dir(&path).is_ok();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]   --> src/tongue/builtin.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         env::set_current_dir(&options[0]).is_ok();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "068ffb6c44d79795c2cec4cb759f518e9a29f10c16c80e73690e925e94258e82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "068ffb6c44d79795c2cec4cb759f518e9a29f10c16c80e73690e925e94258e82", kill_on_drop: false }`
[INFO] [stdout] 068ffb6c44d79795c2cec4cb759f518e9a29f10c16c80e73690e925e94258e82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60dece9d66161cd1a21363bed7c9061de684e5e8f28f696f7aab4cf7e1835504
[INFO] running `Command { std: "docker" "start" "-a" "60dece9d66161cd1a21363bed7c9061de684e5e8f28f696f7aab4cf7e1835504", kill_on_drop: false }`
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/tongue/terminal.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |         term.c_cflag |= (libc::CS8);
[INFO] [stdout]    |                         ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         term.c_cflag |= (libc::CS8);
[INFO] [stdout] 55 +         term.c_cflag |= libc::CS8;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/tongue/evaluator.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Ok(n) => {},
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tongue/evaluator.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn _eval(mut n: Node, config: &mut Config) {
[INFO] [stdout]    |          ----^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/tongue/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     handle.read(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tongue/util.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     buf_writer.write(s.as_bytes());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tongue/util.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     buf_writer.flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]   --> src/tongue/builtin.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         env::set_current_dir(&path).is_ok();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]   --> src/tongue/builtin.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         env::set_current_dir(&options[0]).is_ok();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tongue v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/tongue/terminal.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |         term.c_cflag |= (libc::CS8);
[INFO] [stdout]    |                         ^         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         term.c_cflag |= (libc::CS8);
[INFO] [stdout] 55 +         term.c_cflag |= libc::CS8;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]    --> src/tongue/lexer.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let expected: Vec<String> = vec![
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `got`
[INFO] [stdout]    --> src/tongue/lexer.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let got = tokenize("println(\"Hello, World!\")");
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_got`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/tongue/parser.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let node = Node {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/tongue/evaluator.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Ok(n) => {},
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tongue/evaluator.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn _eval(mut n: Node, config: &mut Config) {
[INFO] [stdout]    |          ----^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/tongue/util.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     handle.read(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tongue/util.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     buf_writer.write(s.as_bytes());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tongue/util.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     buf_writer.flush();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]   --> src/tongue/builtin.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         env::set_current_dir(&path).is_ok();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]   --> src/tongue/builtin.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         env::set_current_dir(&options[0]).is_ok();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "60dece9d66161cd1a21363bed7c9061de684e5e8f28f696f7aab4cf7e1835504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60dece9d66161cd1a21363bed7c9061de684e5e8f28f696f7aab4cf7e1835504", kill_on_drop: false }`
[INFO] [stdout] 60dece9d66161cd1a21363bed7c9061de684e5e8f28f696f7aab4cf7e1835504
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d8c23dcf1faa5c0101c59b535368e622eddbc89e92cc9f5c1b5b78ed8a4d942b
[INFO] running `Command { std: "docker" "start" "-a" "d8c23dcf1faa5c0101c59b535368e622eddbc89e92cc9f5c1b5b78ed8a4d942b", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/tongue/terminal.rs:55:25
[INFO] [stderr]    |
[INFO] [stderr] 55 |         term.c_cflag |= (libc::CS8);
[INFO] [stderr]    |                         ^         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 55 -         term.c_cflag |= (libc::CS8);
[INFO] [stderr] 55 +         term.c_cflag |= libc::CS8;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/tongue/evaluator.rs:60:16
[INFO] [stderr]    |
[INFO] [stderr] 60 |             Ok(n) => {},
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tongue/evaluator.rs:23:10
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn _eval(mut n: Node, config: &mut Config) {
[INFO] [stderr]    |          ----^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]  --> src/tongue/util.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     handle.read(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/tongue/util.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     buf_writer.write(s.as_bytes());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/tongue/util.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     buf_writer.flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/tongue/builtin.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |         env::set_current_dir(&path).is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/tongue/builtin.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         env::set_current_dir(&options[0]).is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expected`
[INFO] [stderr]    --> src/tongue/lexer.rs:160:13
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let expected: Vec<String> = vec![
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `got`
[INFO] [stderr]    --> src/tongue/lexer.rs:166:13
[INFO] [stderr]     |
[INFO] [stderr] 166 |         let got = tokenize("println(\"Hello, World!\")");
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_got`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]    --> src/tongue/parser.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |     let node = Node {
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/tongue/evaluator.rs:60:16
[INFO] [stderr]    |
[INFO] [stderr] 60 |             Ok(n) => {},
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: `tongue` (lib) generated 9 warnings
[INFO] [stderr] warning: `tongue` (lib test) generated 12 warnings (8 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tongue-8cd3d17e18b200b7)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test tongue::lexer::tokenize_empty ... ok
[INFO] [stdout] test tongue::lexer::tokenize_four_token ... ok
[INFO] [stdout] test tongue::lexer::tokenize_one_token ... ok
[INFO] [stdout] test tongue::lexer::tokenize_three_token ... ok
[INFO] [stdout] test tongue::lexer::tokenize_two_token ... ok
[INFO] [stdout] test tongue::parser::parse_command_with_args ... ok
[INFO] [stdout] test tongue::parser::parse_command_without_args ... ok
[INFO] [stdout] test tongue::parser::parse_empty ... ok
[INFO] [stdout] test tongue::parser::parse_formula ... ok
[INFO] [stdout] test tongue::parser::parse_plus ... ok
[INFO] [stdout] test tongue::parser::parse_variable_binding ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tongue-eb9f374fd0cb5285)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tongue
[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] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> /opt/rustwide/workdir/src/tongue/terminal.rs:55:25
[INFO] [stderr]    |
[INFO] [stderr] 55 |         term.c_cflag |= (libc::CS8);
[INFO] [stderr]    |                         ^         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 55 -         term.c_cflag |= (libc::CS8);
[INFO] [stderr] 55 +         term.c_cflag |= libc::CS8;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "d8c23dcf1faa5c0101c59b535368e622eddbc89e92cc9f5c1b5b78ed8a4d942b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8c23dcf1faa5c0101c59b535368e622eddbc89e92cc9f5c1b5b78ed8a4d942b", kill_on_drop: false }`
[INFO] [stdout] d8c23dcf1faa5c0101c59b535368e622eddbc89e92cc9f5c1b5b78ed8a4d942b