[INFO] fetching crate arcshift 0.3.1...
[INFO] testing arcshift-0.3.1 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate arcshift 0.3.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate arcshift 0.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate arcshift 0.3.1
[INFO] tweaked toml for crates.io crate arcshift 0.3.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arcshift 0.3.1 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate arcshift 0.3.1 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mutants v0.0.3
[INFO] [stderr]   Downloaded assoc v0.1.3
[INFO] [stderr]   Downloaded once_cell v1.21.2
[INFO] [stderr]   Downloaded shuttle v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 386a1f77181e16d5b82dc13a4a1ceb662e92fd42054be7f7834e458d50ce4f5b
[INFO] running `Command { std: "docker" "start" "-a" "386a1f77181e16d5b82dc13a4a1ceb662e92fd42054be7f7834e458d50ce4f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "386a1f77181e16d5b82dc13a4a1ceb662e92fd42054be7f7834e458d50ce4f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "386a1f77181e16d5b82dc13a4a1ceb662e92fd42054be7f7834e458d50ce4f5b", kill_on_drop: false }`
[INFO] [stdout] 386a1f77181e16d5b82dc13a4a1ceb662e92fd42054be7f7834e458d50ce4f5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] ed7613c05ed1cc4083a3916cbe1b50a77341464f5282b85e643cc9eadbf8caa4
[INFO] running `Command { std: "docker" "start" "-a" "ed7613c05ed1cc4083a3916cbe1b50a77341464f5282b85e643cc9eadbf8caa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling arcshift v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]     --> src/lib.rs:3241:23
[INFO] [stdout]      |
[INFO] [stdout] 3241 |     pub fn shared_get(&self) -> SharedGetGuard<T> {
[INFO] [stdout]      |                       ^^^^^     ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]      |                       |
[INFO] [stdout]      |                       this lifetime flows to the output
[INFO] [stdout]      |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]     --> src/lib.rs:3:9
[INFO] [stdout]      |
[INFO] [stdout] 3    | #![deny(warnings)]
[INFO] [stdout]      |         ^^^^^^^^
[INFO] [stdout]      = note: `#[deny(mismatched_lifetime_syntaxes)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]      |
[INFO] [stdout] 3241 |     pub fn shared_get(&self) -> SharedGetGuard<'_, T> {
[INFO] [stdout]      |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/cell.rs:134:19
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn borrow(&self) -> ArcShiftCellHandle<T> {
[INFO] [stdout]     |                   ^^^^^     --------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn borrow(&self) -> ArcShiftCellHandle<'_, T> {
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arcshift` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ed7613c05ed1cc4083a3916cbe1b50a77341464f5282b85e643cc9eadbf8caa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed7613c05ed1cc4083a3916cbe1b50a77341464f5282b85e643cc9eadbf8caa4", kill_on_drop: false }`
[INFO] [stdout] ed7613c05ed1cc4083a3916cbe1b50a77341464f5282b85e643cc9eadbf8caa4