[INFO] fetching crate ringbuf-blocking 0.1.0-rc.5...
[INFO] building ringbuf-blocking-0.1.0-rc.5 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate ringbuf-blocking 0.1.0-rc.5 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ringbuf-blocking 0.1.0-rc.5
[INFO] finished tweaking crates.io crate ringbuf-blocking 0.1.0-rc.5
[INFO] tweaked toml for crates.io crate ringbuf-blocking 0.1.0-rc.5 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ringbuf-blocking 0.1.0-rc.5 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ringbuf-blocking 0.1.0-rc.5 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06233d5520af9bd2f1d8e2854ee2c1e1bdfbfdc18a2a63fb898a6fc63d20281c
[INFO] running `Command { std: "docker" "start" "-a" "06233d5520af9bd2f1d8e2854ee2c1e1bdfbfdc18a2a63fb898a6fc63d20281c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06233d5520af9bd2f1d8e2854ee2c1e1bdfbfdc18a2a63fb898a6fc63d20281c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06233d5520af9bd2f1d8e2854ee2c1e1bdfbfdc18a2a63fb898a6fc63d20281c", kill_on_drop: false }`
[INFO] [stdout] 06233d5520af9bd2f1d8e2854ee2c1e1bdfbfdc18a2a63fb898a6fc63d20281c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee2acd3dbb78793de5d6660d1bd5d31fe9e3098a4b0f7e7407767f7e557cc1fb
[INFO] running `Command { std: "docker" "start" "-a" "ee2acd3dbb78793de5d6660d1bd5d31fe9e3098a4b0f7e7407767f7e557cc1fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling ringbuf v0.4.8
[INFO] [stderr]    Compiling ringbuf-blocking v0.1.0-rc.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/sync.rs:40:18
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn take_iter(&self, timeout: Option<Duration>) -> TakeIter<Self> {
[INFO] [stdout]    |                  ^^^^^ the lifetime is elided here    ^^^^^^^^^^^^^^ the same lifetime is hidden 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] 40 |     fn take_iter(&self, timeout: Option<Duration>) -> TakeIter<'_, Self> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "ee2acd3dbb78793de5d6660d1bd5d31fe9e3098a4b0f7e7407767f7e557cc1fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee2acd3dbb78793de5d6660d1bd5d31fe9e3098a4b0f7e7407767f7e557cc1fb", kill_on_drop: false }`
[INFO] [stdout] ee2acd3dbb78793de5d6660d1bd5d31fe9e3098a4b0f7e7407767f7e557cc1fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f8aaabff7533803e1b8ea08adb8b86886bcad238b0574c81a7adbad321281d5
[INFO] running `Command { std: "docker" "start" "-a" "8f8aaabff7533803e1b8ea08adb8b86886bcad238b0574c81a7adbad321281d5", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/sync.rs:40:18
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn take_iter(&self, timeout: Option<Duration>) -> TakeIter<Self> {
[INFO] [stdout]    |                  ^^^^^ the lifetime is elided here    ^^^^^^^^^^^^^^ the same lifetime is hidden 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] 40 |     fn take_iter(&self, timeout: Option<Duration>) -> TakeIter<'_, Self> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ringbuf-blocking v0.1.0-rc.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/sync.rs:40:18
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn take_iter(&self, timeout: Option<Duration>) -> TakeIter<Self> {
[INFO] [stdout]    |                  ^^^^^ the lifetime is elided here    ^^^^^^^^^^^^^^ the same lifetime is hidden 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] 40 |     fn take_iter(&self, timeout: Option<Duration>) -> TakeIter<'_, Self> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "8f8aaabff7533803e1b8ea08adb8b86886bcad238b0574c81a7adbad321281d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f8aaabff7533803e1b8ea08adb8b86886bcad238b0574c81a7adbad321281d5", kill_on_drop: false }`
[INFO] [stdout] 8f8aaabff7533803e1b8ea08adb8b86886bcad238b0574c81a7adbad321281d5