[INFO] fetching crate ringbuffer 0.15.0...
[INFO] testing ringbuffer-0.15.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate ringbuffer 0.15.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate ringbuffer 0.15.0
[INFO] finished tweaking crates.io crate ringbuffer 0.15.0
[INFO] tweaked toml for crates.io crate ringbuffer 0.15.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ringbuffer 0.15.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 98 packages to latest compatible versions
[INFO] [stderr]       Adding compiletest_rs v0.10.2 (available: v0.11.2)
[INFO] [stderr]       Adding criterion v0.4.0 (available: v0.6.0)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 83d49180905b42960e7773c9422243d9da7b3aa24c686c1e3b9187f470925076
[INFO] running `Command { std: "docker" "start" "-a" "83d49180905b42960e7773c9422243d9da7b3aa24c686c1e3b9187f470925076", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83d49180905b42960e7773c9422243d9da7b3aa24c686c1e3b9187f470925076", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83d49180905b42960e7773c9422243d9da7b3aa24c686c1e3b9187f470925076", kill_on_drop: false }`
[INFO] [stdout] 83d49180905b42960e7773c9422243d9da7b3aa24c686c1e3b9187f470925076
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c0c06ee03f0217861b10e6bb306f696bf1012c5ddc516141ea44b9b5bc26f858
[INFO] running `Command { std: "docker" "start" "-a" "c0c06ee03f0217861b10e6bb306f696bf1012c5ddc516141ea44b9b5bc26f858", kill_on_drop: false }`
[INFO] [stderr]    Compiling ringbuffer v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ringbuffer_trait.rs:118:14
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn drain(&mut self) -> RingBufferDrainingIterator<T, Self> {
[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] 118 |     fn drain(&mut self) -> RingBufferDrainingIterator<'_, T, Self> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ringbuffer_trait.rs:222:17
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn iter_mut(&mut self) -> RingBufferMutIterator<T, Self> {
[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] 222 |     fn iter_mut(&mut self) -> RingBufferMutIterator<'_, T, Self> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ringbuffer_trait.rs:229:13
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn iter(&self) -> RingBufferIterator<T, Self> {
[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] 229 |     fn iter(&self) -> RingBufferIterator<'_, T, Self> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ringbuffer` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "c0c06ee03f0217861b10e6bb306f696bf1012c5ddc516141ea44b9b5bc26f858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c06ee03f0217861b10e6bb306f696bf1012c5ddc516141ea44b9b5bc26f858", kill_on_drop: false }`
[INFO] [stdout] c0c06ee03f0217861b10e6bb306f696bf1012c5ddc516141ea44b9b5bc26f858