[INFO] fetching crate test-rusty-grader 0.1.0...
[INFO] checking test-rusty-grader-0.1.0 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate test-rusty-grader 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate test-rusty-grader 0.1.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate test-rusty-grader 0.1.0
[INFO] finished tweaking crates.io crate test-rusty-grader 0.1.0
[INFO] tweaked toml for crates.io crate test-rusty-grader 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b36738f8f60db6c4fdca082f9c5814dd0fdd1a447458db724dab62e2406d40e
[INFO] running `Command { std: "docker" "start" "-a" "0b36738f8f60db6c4fdca082f9c5814dd0fdd1a447458db724dab62e2406d40e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b36738f8f60db6c4fdca082f9c5814dd0fdd1a447458db724dab62e2406d40e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b36738f8f60db6c4fdca082f9c5814dd0fdd1a447458db724dab62e2406d40e", kill_on_drop: false }`
[INFO] [stdout] 0b36738f8f60db6c4fdca082f9c5814dd0fdd1a447458db724dab62e2406d40e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75d2c2b1f104ceaa1b31abf891a886905760fe74f2fa55d344ce93786018f4e1
[INFO] running `Command { std: "docker" "start" "-a" "75d2c2b1f104ceaa1b31abf891a886905760fe74f2fa55d344ce93786018f4e1", kill_on_drop: false }`
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking test-rusty-grader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/instance/mod.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | /         Command::new(get_env("ISOLATE_PATH"))
[INFO] [stdout] 157 | |             .args(&["--cleanup", "--cg", "-b"])
[INFO] [stdout] 158 | |             .arg(self.box_id.to_string())
[INFO] [stdout] 159 | |             .output();
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let _ = Command::new(get_env("ISOLATE_PATH"))
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/instance/mod.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             fs::remove_file(&self.log_file);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |             let _ = fs::remove_file(&self.log_file);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/submission/mod.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         fs::remove_dir_all(&self.tmp_path);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let _ = fs::remove_dir_all(&self.tmp_path);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/instance/mod.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | /         Command::new(get_env("ISOLATE_PATH"))
[INFO] [stdout] 157 | |             .args(&["--cleanup", "--cg", "-b"])
[INFO] [stdout] 158 | |             .arg(self.box_id.to_string())
[INFO] [stdout] 159 | |             .output();
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let _ = Command::new(get_env("ISOLATE_PATH"))
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/instance/mod.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             fs::remove_file(&self.log_file);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |             let _ = fs::remove_file(&self.log_file);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/submission/mod.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         fs::remove_dir_all(&self.tmp_path);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let _ = fs::remove_dir_all(&self.tmp_path);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "75d2c2b1f104ceaa1b31abf891a886905760fe74f2fa55d344ce93786018f4e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75d2c2b1f104ceaa1b31abf891a886905760fe74f2fa55d344ce93786018f4e1", kill_on_drop: false }`
[INFO] [stdout] 75d2c2b1f104ceaa1b31abf891a886905760fe74f2fa55d344ce93786018f4e1
[INFO] checking test-rusty-grader-0.1.0 against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg
[INFO] extracting crate test-rusty-grader 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate test-rusty-grader 0.1.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate test-rusty-grader 0.1.0
[INFO] finished tweaking crates.io crate test-rusty-grader 0.1.0
[INFO] tweaked toml for crates.io crate test-rusty-grader 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4c1882cfea7a67f0accf5e4eca38e239b438d94b6da566aad66a72ab0246af8
[INFO] running `Command { std: "docker" "start" "-a" "e4c1882cfea7a67f0accf5e4eca38e239b438d94b6da566aad66a72ab0246af8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4c1882cfea7a67f0accf5e4eca38e239b438d94b6da566aad66a72ab0246af8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c1882cfea7a67f0accf5e4eca38e239b438d94b6da566aad66a72ab0246af8", kill_on_drop: false }`
[INFO] [stdout] e4c1882cfea7a67f0accf5e4eca38e239b438d94b6da566aad66a72ab0246af8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunexpected_cfgs" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zcheck-cfg", kill_on_drop: false }`
[INFO] [stdout] 63d20bf36c906dc13ae5b774c7779473d6e60341f4751623da116dbad1592e03
[INFO] running `Command { std: "docker" "start" "-a" "63d20bf36c906dc13ae5b774c7779473d6e60341f4751623da116dbad1592e03", kill_on_drop: false }`
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking test-rusty-grader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]  --> src/errors.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[cfg(feature = "backtraces")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]   = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:33:15
[INFO] [stdout]    |
[INFO] [stdout] 33 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:38:15
[INFO] [stdout]    |
[INFO] [stdout] 38 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 46 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:55:19
[INFO] [stdout]    |
[INFO] [stdout] 55 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:70:19
[INFO] [stdout]    |
[INFO] [stdout] 70 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:77:19
[INFO] [stdout]    |
[INFO] [stdout] 77 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 84 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]  --> src/errors.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[cfg(feature = "backtraces")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]   = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:33:15
[INFO] [stdout]    |
[INFO] [stdout] 33 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:38:15
[INFO] [stdout]    |
[INFO] [stdout] 38 |         #[cfg(feature = "backtraces")]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 46 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:55:19
[INFO] [stdout]    |
[INFO] [stdout] 55 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:70:19
[INFO] [stdout]    |
[INFO] [stdout] 70 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:77:19
[INFO] [stdout]    |
[INFO] [stdout] 77 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `backtraces`
[INFO] [stdout]   --> src/errors.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 84 |             #[cfg(feature = "backtraces")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `backtraces` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/instance/mod.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | /         Command::new(get_env("ISOLATE_PATH"))
[INFO] [stdout] 157 | |             .args(&["--cleanup", "--cg", "-b"])
[INFO] [stdout] 158 | |             .arg(self.box_id.to_string())
[INFO] [stdout] 159 | |             .output();
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let _ = Command::new(get_env("ISOLATE_PATH"))
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/instance/mod.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             fs::remove_file(&self.log_file);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |             let _ = fs::remove_file(&self.log_file);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/submission/mod.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         fs::remove_dir_all(&self.tmp_path);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let _ = fs::remove_dir_all(&self.tmp_path);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `test-rusty-grader` (lib) due to 14 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/instance/mod.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | /         Command::new(get_env("ISOLATE_PATH"))
[INFO] [stdout] 157 | |             .args(&["--cleanup", "--cg", "-b"])
[INFO] [stdout] 158 | |             .arg(self.box_id.to_string())
[INFO] [stdout] 159 | |             .output();
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let _ = Command::new(get_env("ISOLATE_PATH"))
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/instance/mod.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             fs::remove_file(&self.log_file);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |             let _ = fs::remove_file(&self.log_file);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/submission/mod.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         fs::remove_dir_all(&self.tmp_path);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let _ = fs::remove_dir_all(&self.tmp_path);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `test-rusty-grader` (lib test) due to 14 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "63d20bf36c906dc13ae5b774c7779473d6e60341f4751623da116dbad1592e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63d20bf36c906dc13ae5b774c7779473d6e60341f4751623da116dbad1592e03", kill_on_drop: false }`
[INFO] [stdout] 63d20bf36c906dc13ae5b774c7779473d6e60341f4751623da116dbad1592e03
