[INFO] fetching crate symmetric-interaction-calculus 0.1.8... [INFO] testing symmetric-interaction-calculus-0.1.8 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1 [INFO] extracting crate symmetric-interaction-calculus 0.1.8 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate symmetric-interaction-calculus 0.1.8 [INFO] finished tweaking crates.io crate symmetric-interaction-calculus 0.1.8 [INFO] tweaked toml for crates.io crate symmetric-interaction-calculus 0.1.8 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate symmetric-interaction-calculus 0.1.8 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 13 packages to latest compatible versions [INFO] [stderr] Adding clap v2.34.0 (available: v4.5.48) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d473e0397895b51836ba922fe544389d5a129833125a8acfcb94856cf42bf660 [INFO] running `Command { std: "docker" "start" "-a" "d473e0397895b51836ba922fe544389d5a129833125a8acfcb94856cf42bf660", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d473e0397895b51836ba922fe544389d5a129833125a8acfcb94856cf42bf660", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d473e0397895b51836ba922fe544389d5a129833125a8acfcb94856cf42bf660", kill_on_drop: false }` [INFO] [stdout] d473e0397895b51836ba922fe544389d5a129833125a8acfcb94856cf42bf660 [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" "-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 927e14cd6a8e9c225e14a091e96ffb8169b567a7fc7a43b2babaceabef433391 [INFO] running `Command { std: "docker" "start" "-a" "927e14cd6a8e9c225e14a091e96ffb8169b567a7fc7a43b2babaceabef433391", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling libc v0.2.176 [INFO] [stderr] Compiling unicode-width v0.1.14 [INFO] [stderr] Compiling ansi_term v0.12.1 [INFO] [stderr] Compiling vec_map v0.8.2 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.34.0 [INFO] [stderr] Compiling symmetric-interaction-calculus v0.1.8 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/term.rs:440:35 [INFO] [stdout] | [INFO] [stdout] 440 | , lets_set : &mut HashSet<(u32)> [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 440 - , lets_set : &mut HashSet<(u32)> [INFO] [stdout] 440 + , lets_set : &mut HashSet [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:210:37 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [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: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:452:25 [INFO] [stdout] | [INFO] [stdout] 452 | let mut lam = Lam{nam: nam, bod: Box::new(bod)}; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/term.rs:210:51 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/term.rs:440:35 [INFO] [stdout] | [INFO] [stdout] 440 | , lets_set : &mut HashSet<(u32)> [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 440 - , lets_set : &mut HashSet<(u32)> [INFO] [stdout] 440 + , lets_set : &mut HashSet [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:210:37 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [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: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:452:25 [INFO] [stdout] | [INFO] [stdout] 452 | let mut lam = Lam{nam: nam, bod: Box::new(bod)}; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/term.rs:210:51 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.09s [INFO] running `Command { std: "docker" "inspect" "927e14cd6a8e9c225e14a091e96ffb8169b567a7fc7a43b2babaceabef433391", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "927e14cd6a8e9c225e14a091e96ffb8169b567a7fc7a43b2babaceabef433391", kill_on_drop: false }` [INFO] [stdout] 927e14cd6a8e9c225e14a091e96ffb8169b567a7fc7a43b2babaceabef433391 [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" "-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 06fb83037e69b20f37fe0308c9ab8e6e7d25a289b574abbd673fe2c14dbbc4ae [INFO] running `Command { std: "docker" "start" "-a" "06fb83037e69b20f37fe0308c9ab8e6e7d25a289b574abbd673fe2c14dbbc4ae", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/term.rs:440:35 [INFO] [stdout] | [INFO] [stdout] 440 | , lets_set : &mut HashSet<(u32)> [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 440 - , lets_set : &mut HashSet<(u32)> [INFO] [stdout] 440 + , lets_set : &mut HashSet [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:210:37 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [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: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:452:25 [INFO] [stdout] | [INFO] [stdout] 452 | let mut lam = Lam{nam: nam, bod: Box::new(bod)}; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/term.rs:210:51 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling symmetric-interaction-calculus v0.1.8 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/term.rs:440:35 [INFO] [stdout] | [INFO] [stdout] 440 | , lets_set : &mut HashSet<(u32)> [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 440 - , lets_set : &mut HashSet<(u32)> [INFO] [stdout] 440 + , lets_set : &mut HashSet [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/term.rs:440:35 [INFO] [stdout] | [INFO] [stdout] 440 | , lets_set : &mut HashSet<(u32)> [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 440 - , lets_set : &mut HashSet<(u32)> [INFO] [stdout] 440 + , lets_set : &mut HashSet [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:210:37 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [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: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:452:25 [INFO] [stdout] | [INFO] [stdout] 452 | let mut lam = Lam{nam: nam, bod: Box::new(bod)}; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/term.rs:210:51 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:210:37 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [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: variable does not need to be mutable [INFO] [stdout] --> src/term.rs:452:25 [INFO] [stdout] | [INFO] [stdout] 452 | let mut lam = Lam{nam: nam, bod: Box::new(bod)}; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/term.rs:210:51 [INFO] [stdout] | [INFO] [stdout] 210 | ... let mut name = nam.clone().to_vec(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.75s [INFO] running `Command { std: "docker" "inspect" "06fb83037e69b20f37fe0308c9ab8e6e7d25a289b574abbd673fe2c14dbbc4ae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06fb83037e69b20f37fe0308c9ab8e6e7d25a289b574abbd673fe2c14dbbc4ae", kill_on_drop: false }` [INFO] [stdout] 06fb83037e69b20f37fe0308c9ab8e6e7d25a289b574abbd673fe2c14dbbc4ae [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" "-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 58cec98cd679c6cdb92dd69cd6e7d0af8341812f4aaa1339b029fe6d459259a2 [INFO] running `Command { std: "docker" "start" "-a" "58cec98cd679c6cdb92dd69cd6e7d0af8341812f4aaa1339b029fe6d459259a2", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/term.rs:440:35 [INFO] [stderr] | [INFO] [stderr] 440 | , lets_set : &mut HashSet<(u32)> [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 440 - , lets_set : &mut HashSet<(u32)> [INFO] [stderr] 440 + , lets_set : &mut HashSet [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/term.rs:210:37 [INFO] [stderr] | [INFO] [stderr] 210 | ... let mut name = nam.clone().to_vec(); [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: variable does not need to be mutable [INFO] [stderr] --> src/term.rs:452:25 [INFO] [stderr] | [INFO] [stderr] 452 | let mut lam = Lam{nam: nam, bod: Box::new(bod)}; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stderr] --> src/term.rs:210:51 [INFO] [stderr] | [INFO] [stderr] 210 | ... let mut name = nam.clone().to_vec(); [INFO] [stderr] | ^^^^^^^^ help: remove this redundant call [INFO] [stderr] | [INFO] [stderr] = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed [INFO] [stderr] = note: `#[warn(noop_method_call)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `symmetric-interaction-calculus` (lib) generated 4 warnings (run `cargo fix --lib -p symmetric-interaction-calculus` to apply 4 suggestions) [INFO] [stderr] warning: `symmetric-interaction-calculus` (bin "sic" test) generated 4 warnings (4 duplicates) [INFO] [stderr] warning: `symmetric-interaction-calculus` (lib test) generated 4 warnings (4 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sic-6660e578e8741596) [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] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sic-c6e9304e3cb8940a) [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] [stderr] Doc-tests sic [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/term.rs:440:35 [INFO] [stderr] | [INFO] [stderr] 440 | , lets_set : &mut HashSet<(u32)> [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 440 - , lets_set : &mut HashSet<(u32)> [INFO] [stderr] 440 + , lets_set : &mut HashSet [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" "58cec98cd679c6cdb92dd69cd6e7d0af8341812f4aaa1339b029fe6d459259a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58cec98cd679c6cdb92dd69cd6e7d0af8341812f4aaa1339b029fe6d459259a2", kill_on_drop: false }` [INFO] [stdout] 58cec98cd679c6cdb92dd69cd6e7d0af8341812f4aaa1339b029fe6d459259a2