[INFO] fetching crate stack-buf 0.1.6...
[INFO] testing stack-buf-0.1.6 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate stack-buf 0.1.6 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate stack-buf 0.1.6
[INFO] finished tweaking crates.io crate stack-buf 0.1.6
[INFO] tweaked toml for crates.io crate stack-buf 0.1.6 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stack-buf 0.1.6 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47fc88b251f0084a34f201b3f4f29890ed1c373433110c51367d7a4ae6e35e83
[INFO] running `Command { std: "docker" "start" "-a" "47fc88b251f0084a34f201b3f4f29890ed1c373433110c51367d7a4ae6e35e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47fc88b251f0084a34f201b3f4f29890ed1c373433110c51367d7a4ae6e35e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47fc88b251f0084a34f201b3f4f29890ed1c373433110c51367d7a4ae6e35e83", kill_on_drop: false }`
[INFO] [stdout] 47fc88b251f0084a34f201b3f4f29890ed1c373433110c51367d7a4ae6e35e83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6672ed538458f1bb94e38a724e09d94170fd5b73344fa8e251b536c8e5e21aed
[INFO] running `Command { std: "docker" "start" "-a" "6672ed538458f1bb94e38a724e09d94170fd5b73344fa8e251b536c8e5e21aed", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-buf v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vec.rs:540:21
[INFO] [stdout]     |
[INFO] [stdout] 540 |     pub fn drain<R>(&mut self, range: R) -> Drain<T, N>
[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] 540 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T, N>
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "6672ed538458f1bb94e38a724e09d94170fd5b73344fa8e251b536c8e5e21aed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6672ed538458f1bb94e38a724e09d94170fd5b73344fa8e251b536c8e5e21aed", kill_on_drop: false }`
[INFO] [stdout] 6672ed538458f1bb94e38a724e09d94170fd5b73344fa8e251b536c8e5e21aed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5440c4860a6fb1f8b2d810c2ef4eb3763f5f15cc8512d5e5e9a8cb6b18c4f3e4
[INFO] running `Command { std: "docker" "start" "-a" "5440c4860a6fb1f8b2d810c2ef4eb3763f5f15cc8512d5e5e9a8cb6b18c4f3e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-buf v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vec.rs:540:21
[INFO] [stdout]     |
[INFO] [stdout] 540 |     pub fn drain<R>(&mut self, range: R) -> Drain<T, N>
[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] 540 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T, N>
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vec.rs:540:21
[INFO] [stdout]     |
[INFO] [stdout] 540 |     pub fn drain<R>(&mut self, range: R) -> Drain<T, N>
[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] 540 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T, N>
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "5440c4860a6fb1f8b2d810c2ef4eb3763f5f15cc8512d5e5e9a8cb6b18c4f3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5440c4860a6fb1f8b2d810c2ef4eb3763f5f15cc8512d5e5e9a8cb6b18c4f3e4", kill_on_drop: false }`
[INFO] [stdout] 5440c4860a6fb1f8b2d810c2ef4eb3763f5f15cc8512d5e5e9a8cb6b18c4f3e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3d5f8038e9788ff2ee61058a656cfd78180a1b5bf2a52ed2c5be7b62af7df1f3
[INFO] running `Command { std: "docker" "start" "-a" "3d5f8038e9788ff2ee61058a656cfd78180a1b5bf2a52ed2c5be7b62af7df1f3", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/vec.rs:540:21
[INFO] [stderr]     |
[INFO] [stderr] 540 |     pub fn drain<R>(&mut self, range: R) -> Drain<T, N>
[INFO] [stderr]     |                     ^^^^^^^^^               ----------- the same lifetime is hidden here
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 540 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T, N>
[INFO] [stderr]     |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: `stack-buf` (lib) generated 1 warning (run `cargo fix --lib -p stack-buf` to apply 1 suggestion)
[INFO] [stderr] warning: `stack-buf` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stack_buf-da4a032a1c93fc7e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stack_buf
[INFO] [stdout] 
[INFO] [stdout] running 29 tests
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::extend_from_slice (line 754) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::insert (line 396) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::dedup_by (line 626) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::from_elem (line 701) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::capacity (line 221) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::len (line 172) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N> (line 861) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::clear (line 373) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::is_full (line 204) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::drain (line 531) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::is_empty (line 188) ... ok
[INFO] [stdout] test src/vec.rs - vec::&'amutStackVec<T,N> (line 1132) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::dedup_by_key (line 673) ... ok
[INFO] [stdout] test src/vec.rs - vec::&'aStackVec<T,N> (line 1111) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N> (line 1155) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::push (line 294) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::retain (line 591) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::push_elem (line 722) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::remove (line 438) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::copy_from_slice (line 827) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::truncate (line 343) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::swap_remove (line 481) ... ok
[INFO] [stdout] test src/vec.rs - vec::stack_vec (line 1310) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::resize (line 788) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::remaining_capacity (line 236) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::new (line 150) ... ok
[INFO] [stdout] test src/vec.rs - vec::StackVec<T,N>::pop (line 314) ... ok
[INFO] [stdout] test src/vec.rs - vec::stack_vec (line 1324) ... ok
[INFO] [stdout] test src/vec.rs - vec::stack_vec (line 1340) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 29 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.95s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3d5f8038e9788ff2ee61058a656cfd78180a1b5bf2a52ed2c5be7b62af7df1f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d5f8038e9788ff2ee61058a656cfd78180a1b5bf2a52ed2c5be7b62af7df1f3", kill_on_drop: false }`
[INFO] [stdout] 3d5f8038e9788ff2ee61058a656cfd78180a1b5bf2a52ed2c5be7b62af7df1f3