[INFO] cloning repository https://github.com/MDeiml/mademath [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MDeiml/mademath" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMDeiml%2Fmademath", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMDeiml%2Fmademath'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f82f2516fe458e530415b7b178e8954da90cf3a3 [INFO] checking MDeiml/mademath against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMDeiml%2Fmademath" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MDeiml/mademath on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/MDeiml/mademath [INFO] finished tweaking git repo https://github.com/MDeiml/mademath [INFO] tweaked toml for git repo https://github.com/MDeiml/mademath written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/MDeiml/mademath already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 32c957ef31d360844eabd6ddf1afb7f2523baa47b019ab248bf1084c7da2ad75 [INFO] running `Command { std: "docker" "start" "-a" "32c957ef31d360844eabd6ddf1afb7f2523baa47b019ab248bf1084c7da2ad75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "32c957ef31d360844eabd6ddf1afb7f2523baa47b019ab248bf1084c7da2ad75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "32c957ef31d360844eabd6ddf1afb7f2523baa47b019ab248bf1084c7da2ad75", kill_on_drop: false }` [INFO] [stdout] 32c957ef31d360844eabd6ddf1afb7f2523baa47b019ab248bf1084c7da2ad75 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5e024cb761fd63c58293f7757af28bbfc5e7693200e808862a62c7a0ab0d82aa [INFO] running `Command { std: "docker" "start" "-a" "5e024cb761fd63c58293f7757af28bbfc5e7693200e808862a62c7a0ab0d82aa", kill_on_drop: false }` [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Checking regex-syntax v0.6.26 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking nom v7.1.1 [INFO] [stderr] Checking getrandom v0.2.6 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking regex v1.5.6 [INFO] [stderr] Checking attomath v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking env_logger v0.8.4 [INFO] [stderr] Checking quickcheck v1.0.3 [INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/expression.rs:142:21 [INFO] [stdout] | [INFO] [stdout] 142 | self.borrow() [INFO] [stdout] | ^^^^^^^^^ unnecessary method call [INFO] [stdout] | [INFO] [stdout] = note: the type `Expression` does not implement `Borrow`, so calling `borrow` on `&Expression` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[deny(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/expression.rs:209:69 [INFO] [stdout] | [INFO] [stdout] 209 | ... Box::from(self.subexpression(start).data.borrow()), [INFO] [stdout] | ^^^^^^^^^ unnecessary method call [INFO] [stdout] | [INFO] [stdout] = note: the type `[i16]` does not implement `Borrow`, so calling `borrow` on `&[i16]` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/expression.rs:214:47 [INFO] [stdout] | [INFO] [stdout] 214 | expr_index += subexpr.data.borrow().len(); [INFO] [stdout] | ^^^^^^^^^ unnecessary method call [INFO] [stdout] | [INFO] [stdout] = note: the type `[i16]` does not implement `Borrow`, so calling `borrow` on `&[i16]` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/expression.rs:218:47 [INFO] [stdout] | [INFO] [stdout] 218 | ... data: subexpr.data.borrow(), [INFO] [stdout] | ^^^^^^^^^ unnecessary method call [INFO] [stdout] | [INFO] [stdout] = note: the type `[i16]` does not implement `Borrow`, so calling `borrow` on `&[i16]` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> src/expression.rs:257:58 [INFO] [stdout] | [INFO] [stdout] 257 | Self::subexpression_check(expr, 0).map(|s| s.data.borrow().len()) [INFO] [stdout] | ^^^^^^^^^ unnecessary method call [INFO] [stdout] | [INFO] [stdout] = note: the type `[i16]` does not implement `Borrow`, so calling `borrow` on `&[i16]` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/serialization/database.rs:114:17 [INFO] [stdout] | [INFO] [stdout] 114 | &entry.insert((self.last_name, index + 1)); [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] 114 | let _ = &entry.insert((self.last_name, index + 1)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `attomath` (lib) due to 6 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "5e024cb761fd63c58293f7757af28bbfc5e7693200e808862a62c7a0ab0d82aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e024cb761fd63c58293f7757af28bbfc5e7693200e808862a62c7a0ab0d82aa", kill_on_drop: false }` [INFO] [stdout] 5e024cb761fd63c58293f7757af28bbfc5e7693200e808862a62c7a0ab0d82aa