[INFO] fetching crate crater 0.1.1...
[INFO] checking crater-0.1.1 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate crater 0.1.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate crater 0.1.1
[INFO] finished tweaking crates.io crate crater 0.1.1
[INFO] tweaked toml for crates.io crate crater 0.1.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate crater 0.1.1 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 104958e045b5e0aeb1ad6a30fd6427b59a53c3fe10b81c1363898ed38634813b
[INFO] running `Command { std: "docker" "start" "-a" "104958e045b5e0aeb1ad6a30fd6427b59a53c3fe10b81c1363898ed38634813b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "104958e045b5e0aeb1ad6a30fd6427b59a53c3fe10b81c1363898ed38634813b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "104958e045b5e0aeb1ad6a30fd6427b59a53c3fe10b81c1363898ed38634813b", kill_on_drop: false }`
[INFO] [stdout] 104958e045b5e0aeb1ad6a30fd6427b59a53c3fe10b81c1363898ed38634813b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fd8f29bbbd9338659bbcaef22a00ccbbe7f52f39ac1763a1594c90704662c4a
[INFO] running `Command { std: "docker" "start" "-a" "5fd8f29bbbd9338659bbcaef22a00ccbbe7f52f39ac1763a1594c90704662c4a", kill_on_drop: false }`
[INFO] [stderr]     Checking crater v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `non_null_convenience` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(split_at_checked, allocator_api, non_null_convenience, slice_ptr_get)]
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `split_at_checked` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(split_at_checked, allocator_api, non_null_convenience, slice_ptr_get)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `non_null_convenience` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(split_at_checked, allocator_api, non_null_convenience, slice_ptr_get)]
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `split_at_checked` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(split_at_checked, allocator_api, non_null_convenience, slice_ptr_get)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SiblingIter` is never constructed
[INFO] [stdout]    --> src/fheap.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 | struct SiblingIter<'a, T: Node<'a> + ?Sized> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/fheap.rs:140:26
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn get_raw(&'a self) -> &RawNode<'a, Self>;
[INFO] [stdout]     |                 --          ^^^^^^^^^--^^^^^^^
[INFO] [stdout]     |                 |           |        |
[INFO] [stdout]     |                 |           |        the same lifetime is named here
[INFO] [stdout]     |                 |           the same lifetime is elided here
[INFO] [stdout]     |                 the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn get_raw(&'a self) -> &'a RawNode<'a, Self>;
[INFO] [stdout]     |                              ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `allocator_api` is declared but not used
[INFO] [stdout]   --> src/lib.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(split_at_checked, allocator_api, non_null_convenience, slice_ptr_get)]
[INFO] [stdout]    |                              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `slice_ptr_get` is declared but not used
[INFO] [stdout]   --> src/lib.rs:13:67
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(split_at_checked, allocator_api, non_null_convenience, slice_ptr_get)]
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/fheap.rs:140:26
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn get_raw(&'a self) -> &RawNode<'a, Self>;
[INFO] [stdout]     |                 --          ^^^^^^^^^--^^^^^^^
[INFO] [stdout]     |                 |           |        |
[INFO] [stdout]     |                 |           |        the same lifetime is named here
[INFO] [stdout]     |                 |           the same lifetime is elided here
[INFO] [stdout]     |                 the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn get_raw(&'a self) -> &'a RawNode<'a, Self>;
[INFO] [stdout]     |                              ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding or eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/fheap.rs:611:27
[INFO] [stdout]     |
[INFO] [stdout] 611 |         fn get_raw(&'a self) -> &RawNode<Self> {
[INFO] [stdout]     |                     --          ^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |           ||
[INFO] [stdout]     |                     |           |the same lifetime is hidden here
[INFO] [stdout]     |                     |           the same lifetime is elided here
[INFO] [stdout]     |                     the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 611 |         fn get_raw(&'a self) -> &'a RawNode<'a, Self> {
[INFO] [stdout]     |                                  ++         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/fheap.rs:665:27
[INFO] [stdout]     |
[INFO] [stdout] 665 |         fn get_raw(&'a self) -> &RawNode<'a, Self> {
[INFO] [stdout]     |                     --          ^^^^^^^^^--^^^^^^^
[INFO] [stdout]     |                     |           |        |
[INFO] [stdout]     |                     |           |        the same lifetime is named here
[INFO] [stdout]     |                     |           the same lifetime is elided here
[INFO] [stdout]     |                     the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 665 |         fn get_raw(&'a self) -> &'a RawNode<'a, Self> {
[INFO] [stdout]     |                                  ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `allocator_api` is declared but not used
[INFO] [stdout]   --> src/lib.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(split_at_checked, allocator_api, non_null_convenience, slice_ptr_get)]
[INFO] [stdout]    |                              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `slice_ptr_get` is declared but not used
[INFO] [stdout]   --> src/lib.rs:13:67
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(split_at_checked, allocator_api, non_null_convenience, slice_ptr_get)]
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "5fd8f29bbbd9338659bbcaef22a00ccbbe7f52f39ac1763a1594c90704662c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd8f29bbbd9338659bbcaef22a00ccbbe7f52f39ac1763a1594c90704662c4a", kill_on_drop: false }`
[INFO] [stdout] 5fd8f29bbbd9338659bbcaef22a00ccbbe7f52f39ac1763a1594c90704662c4a
