[INFO] fetching crate cow_vec_item 0.5.1... [INFO] testing cow_vec_item-0.5.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7 [INFO] extracting crate cow_vec_item 0.5.1 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate cow_vec_item 0.5.1 [INFO] finished tweaking crates.io crate cow_vec_item 0.5.1 [INFO] tweaked toml for crates.io crate cow_vec_item 0.5.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate cow_vec_item 0.5.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 25d296a159ce205230c8db709da83b52ceb28cb8c15c7d4c07e5db20c822c0ad [INFO] running `Command { std: "docker" "start" "-a" "25d296a159ce205230c8db709da83b52ceb28cb8c15c7d4c07e5db20c822c0ad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "25d296a159ce205230c8db709da83b52ceb28cb8c15c7d4c07e5db20c822c0ad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "25d296a159ce205230c8db709da83b52ceb28cb8c15c7d4c07e5db20c822c0ad", kill_on_drop: false }` [INFO] [stdout] 25d296a159ce205230c8db709da83b52ceb28cb8c15c7d4c07e5db20c822c0ad [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 640a839b6011485007de23a6ea83786b7c5c9105aada0fc66fe74a49e48966d4 [INFO] running `Command { std: "docker" "start" "-a" "640a839b6011485007de23a6ea83786b7c5c9105aada0fc66fe74a49e48966d4", kill_on_drop: false }` [INFO] [stderr] Compiling cow_vec_item v0.5.1 (/opt/rustwide/workdir) [INFO] [stdout] error: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:511:13 [INFO] [stdout] | [INFO] [stdout] 511 | let mut theref = unsafe { &mut *self.cowvec }; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | #![deny(warnings)] [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: eliding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/lib.rs:473:86 [INFO] [stdout] | [INFO] [stdout] 473 | pub fn eager_cloned_iter_mut<'cowvec>(&'cowvec mut self) -> impl Iterator [INFO] [stdout] | ------- the lifetime is named here ^^^^^^ the same 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: `#[deny(mismatched_lifetime_syntaxes)]` implied by `#[deny(warnings)]` [INFO] [stdout] help: consistently use `'cowvec` [INFO] [stdout] | [INFO] [stdout] 473 | pub fn eager_cloned_iter_mut<'cowvec>(&'cowvec mut self) -> impl Iterator [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cow_vec_item` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "640a839b6011485007de23a6ea83786b7c5c9105aada0fc66fe74a49e48966d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "640a839b6011485007de23a6ea83786b7c5c9105aada0fc66fe74a49e48966d4", kill_on_drop: false }` [INFO] [stdout] 640a839b6011485007de23a6ea83786b7c5c9105aada0fc66fe74a49e48966d4