[INFO] fetching crate const-linear 0.1.0... [INFO] checking const-linear-0.1.0 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073 [INFO] extracting crate const-linear 0.1.0 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate const-linear 0.1.0 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate const-linear 0.1.0 [INFO] finished tweaking crates.io crate const-linear 0.1.0 [INFO] tweaked toml for crates.io crate const-linear 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5e5ce9982f8296a29cedb06e3fad854af2c67bc9e06250db9cd46dd429118b81 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "5e5ce9982f8296a29cedb06e3fad854af2c67bc9e06250db9cd46dd429118b81", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5e5ce9982f8296a29cedb06e3fad854af2c67bc9e06250db9cd46dd429118b81", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e5ce9982f8296a29cedb06e3fad854af2c67bc9e06250db9cd46dd429118b81", kill_on_drop: false }` [INFO] [stdout] 5e5ce9982f8296a29cedb06e3fad854af2c67bc9e06250db9cd46dd429118b81 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] bb7944420fc8be4c52039d582941b7d07456af415a5ffeceb021194af441d075 [INFO] running `Command { std: "docker" "start" "-a" "bb7944420fc8be4c52039d582941b7d07456af415a5ffeceb021194af441d075", kill_on_drop: false }` [INFO] [stderr] Checking const-linear v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary braces around const expression [INFO] [stdout] --> src/matrix/mod.rs:1272:27 [INFO] [stdout] | [INFO] [stdout] 1272 | impl Vector { [INFO] [stdout] | ^^^^^ help: remove these braces [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_braces)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around const expression [INFO] [stdout] --> src/matrix/mod.rs:1272:27 [INFO] [stdout] | [INFO] [stdout] 1272 | impl Vector { [INFO] [stdout] | ^^^^^ help: remove these braces [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_braces)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: not automatically applying `DerefMut` on `ManuallyDrop` union field [INFO] [stdout] --> src/utils.rs:172:26 [INFO] [stdout] | [INFO] [stdout] 172 | &mut self.inner.maybe_uninit[self.length - 1], [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: writing to this reference calls the destructor for the old value [INFO] [stdout] = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `const-linear` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: not automatically applying `DerefMut` on `ManuallyDrop` union field [INFO] [stdout] --> src/utils.rs:172:26 [INFO] [stdout] | [INFO] [stdout] 172 | &mut self.inner.maybe_uninit[self.length - 1], [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: writing to this reference calls the destructor for the old value [INFO] [stdout] = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "bb7944420fc8be4c52039d582941b7d07456af415a5ffeceb021194af441d075", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bb7944420fc8be4c52039d582941b7d07456af415a5ffeceb021194af441d075", kill_on_drop: false }` [INFO] [stdout] bb7944420fc8be4c52039d582941b7d07456af415a5ffeceb021194af441d075