[INFO] fetching crate persist-o-vec 0.3.1... [INFO] building persist-o-vec-0.3.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1 [INFO] extracting crate persist-o-vec 0.3.1 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate persist-o-vec 0.3.1 [INFO] finished tweaking crates.io crate persist-o-vec 0.3.1 [INFO] tweaked toml for crates.io crate persist-o-vec 0.3.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate persist-o-vec 0.3.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 1 package to latest compatible version [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] edac2c5d2d4832005be6ef1b8c607e43c6fbf4bdfcd87d0ad6dbf61896ae86df [INFO] running `Command { std: "docker" "start" "-a" "edac2c5d2d4832005be6ef1b8c607e43c6fbf4bdfcd87d0ad6dbf61896ae86df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "edac2c5d2d4832005be6ef1b8c607e43c6fbf4bdfcd87d0ad6dbf61896ae86df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "edac2c5d2d4832005be6ef1b8c607e43c6fbf4bdfcd87d0ad6dbf61896ae86df", kill_on_drop: false }` [INFO] [stdout] edac2c5d2d4832005be6ef1b8c607e43c6fbf4bdfcd87d0ad6dbf61896ae86df [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0f6e326b93a7ae8c7de74223e9b5765f463e5ba18cd2ce4a03aaca2c35969099 [INFO] running `Command { std: "docker" "start" "-a" "0f6e326b93a7ae8c7de74223e9b5765f463e5ba18cd2ce4a03aaca2c35969099", kill_on_drop: false }` [INFO] [stderr] Compiling persist-o-vec v0.3.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:255:29 [INFO] [stdout] | [INFO] [stdout] 255 | if let Some(mut into_used) = into_used.as_mut() { [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: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:340:29 [INFO] [stdout] | [INFO] [stdout] 340 | if let Some(mut next) = (*slot).next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:356:13 [INFO] [stdout] | [INFO] [stdout] 356 | let mut slot = &mut self.entries[index]; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:311:17 [INFO] [stdout] | [INFO] [stdout] 311 | let mut slot = &mut self.entries[index]; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:285:25 [INFO] [stdout] | [INFO] [stdout] 285 | if let Some(mut prev) = slot.prev.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:286:29 [INFO] [stdout] | [INFO] [stdout] 286 | if let Some(mut next) = slot.next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:293:32 [INFO] [stdout] | [INFO] [stdout] 293 | } else if let Some(mut next) = slot.next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:378:17 [INFO] [stdout] | [INFO] [stdout] 378 | pub fn iter(&self) -> Iter { [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] 378 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:395:21 [INFO] [stdout] | [INFO] [stdout] 395 | pub fn iter_mut(&mut self) -> IterMut { [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] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 395 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [optimized + debuginfo] target(s) in 0.39s [INFO] running `Command { std: "docker" "inspect" "0f6e326b93a7ae8c7de74223e9b5765f463e5ba18cd2ce4a03aaca2c35969099", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0f6e326b93a7ae8c7de74223e9b5765f463e5ba18cd2ce4a03aaca2c35969099", kill_on_drop: false }` [INFO] [stdout] 0f6e326b93a7ae8c7de74223e9b5765f463e5ba18cd2ce4a03aaca2c35969099 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 555adf3ece88aa5a3f8ffd1c96a3aa37565e59c6ee9a8d94d92b20f85fdfa8f2 [INFO] running `Command { std: "docker" "start" "-a" "555adf3ece88aa5a3f8ffd1c96a3aa37565e59c6ee9a8d94d92b20f85fdfa8f2", kill_on_drop: false }` [INFO] [stderr] Compiling bencher v0.1.5 [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:255:29 [INFO] [stdout] | [INFO] [stdout] 255 | if let Some(mut into_used) = into_used.as_mut() { [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: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:340:29 [INFO] [stdout] | [INFO] [stdout] 340 | if let Some(mut next) = (*slot).next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:356:13 [INFO] [stdout] | [INFO] [stdout] 356 | let mut slot = &mut self.entries[index]; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:311:17 [INFO] [stdout] | [INFO] [stdout] 311 | let mut slot = &mut self.entries[index]; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:285:25 [INFO] [stdout] | [INFO] [stdout] 285 | if let Some(mut prev) = slot.prev.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:286:29 [INFO] [stdout] | [INFO] [stdout] 286 | if let Some(mut next) = slot.next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:293:32 [INFO] [stdout] | [INFO] [stdout] 293 | } else if let Some(mut next) = slot.next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:378:17 [INFO] [stdout] | [INFO] [stdout] 378 | pub fn iter(&self) -> Iter { [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] 378 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:395:21 [INFO] [stdout] | [INFO] [stdout] 395 | pub fn iter_mut(&mut self) -> IterMut { [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] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 395 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling persist-o-vec v0.3.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:311:17 [INFO] [stdout] | [INFO] [stdout] 311 | let mut slot = &mut self.entries[index]; [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: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:255:29 [INFO] [stdout] | [INFO] [stdout] 255 | if let Some(mut into_used) = into_used.as_mut() { [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:340:29 [INFO] [stdout] | [INFO] [stdout] 340 | if let Some(mut next) = (*slot).next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:356:13 [INFO] [stdout] | [INFO] [stdout] 356 | let mut slot = &mut self.entries[index]; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:285:25 [INFO] [stdout] | [INFO] [stdout] 285 | if let Some(mut prev) = slot.prev.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:286:29 [INFO] [stdout] | [INFO] [stdout] 286 | if let Some(mut next) = slot.next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:293:32 [INFO] [stdout] | [INFO] [stdout] 293 | } else if let Some(mut next) = slot.next.as_mut() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:378:17 [INFO] [stdout] | [INFO] [stdout] 378 | pub fn iter(&self) -> Iter { [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] 378 | pub fn iter(&self) -> Iter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:395:21 [INFO] [stdout] | [INFO] [stdout] 395 | pub fn iter_mut(&mut self) -> IterMut { [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] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 395 | pub fn iter_mut(&mut self) -> IterMut<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [optimized + debuginfo] target(s) in 2.58s [INFO] running `Command { std: "docker" "inspect" "555adf3ece88aa5a3f8ffd1c96a3aa37565e59c6ee9a8d94d92b20f85fdfa8f2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "555adf3ece88aa5a3f8ffd1c96a3aa37565e59c6ee9a8d94d92b20f85fdfa8f2", kill_on_drop: false }` [INFO] [stdout] 555adf3ece88aa5a3f8ffd1c96a3aa37565e59c6ee9a8d94d92b20f85fdfa8f2