[INFO] fetching crate unthbuf 1.0.0... [INFO] checking unthbuf-1.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate unthbuf 1.0.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate unthbuf 1.0.0 [INFO] finished tweaking crates.io crate unthbuf 1.0.0 [INFO] tweaked toml for crates.io crate unthbuf 1.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate unthbuf 1.0.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 14 packages to latest compatible versions [INFO] [stderr] Adding rand v0.8.5 (available: v0.9.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cb541090f53cc091591d6f3e6e2dea9383f63a3b0be2b43f748b83461cd649dc [INFO] running `Command { std: "docker" "start" "-a" "cb541090f53cc091591d6f3e6e2dea9383f63a3b0be2b43f748b83461cd649dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cb541090f53cc091591d6f3e6e2dea9383f63a3b0be2b43f748b83461cd649dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb541090f53cc091591d6f3e6e2dea9383f63a3b0be2b43f748b83461cd649dc", kill_on_drop: false }` [INFO] [stdout] cb541090f53cc091591d6f3e6e2dea9383f63a3b0be2b43f748b83461cd649dc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 05eb02d31c7d1d29933373c4db94c9bbaf8e0e0e019fcad73e7cebd82dd9de65 [INFO] running `Command { std: "docker" "start" "-a" "05eb02d31c7d1d29933373c4db94c9bbaf8e0e0e019fcad73e7cebd82dd9de65", kill_on_drop: false }` [INFO] [stderr] Checking unthbuf v1.0.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/iter.rs:7:17 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn iter(&self) -> UnthBufIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 7 | pub fn iter(&self) -> UnthBufIter<'_, CL> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rand::prelude::*` [INFO] [stdout] --> src/tests.rs:126:9 [INFO] [stdout] | [INFO] [stdout] 126 | use rand::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tests.rs:127:9 [INFO] [stdout] | [INFO] [stdout] 127 | let mut indices: Vec = (0..ITERATIONS).collect(); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rng` [INFO] [stdout] --> src/tests.rs:125:17 [INFO] [stdout] | [INFO] [stdout] 125 | fn test_indices(rng: &mut rand::prelude::StdRng) -> Vec { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rng` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/iter.rs:7:17 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn iter(&self) -> UnthBufIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 7 | pub fn iter(&self) -> UnthBufIter<'_, CL> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/tests.rs:157:30 [INFO] [stdout] | [INFO] [stdout] 157 | let values = test_values(bitsize.try_into().unwrap(), &mut rng); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `unthbuf` (lib test) due to 1 previous error; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "05eb02d31c7d1d29933373c4db94c9bbaf8e0e0e019fcad73e7cebd82dd9de65", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "05eb02d31c7d1d29933373c4db94c9bbaf8e0e0e019fcad73e7cebd82dd9de65", kill_on_drop: false }` [INFO] [stdout] 05eb02d31c7d1d29933373c4db94c9bbaf8e0e0e019fcad73e7cebd82dd9de65