[INFO] crate dogear 0.4.0 is already in cache
[INFO] checking dogear-0.4.0 against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] extracting crate dogear 0.4.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate dogear 0.4.0 on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate dogear 0.4.0
[INFO] finished tweaking crates.io crate dogear 0.4.0
[INFO] tweaked toml for crates.io crate dogear 0.4.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallbitvec v2.5.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a184586aa284ac313156c0f8c0af9e65aae7defd6e591d024d1800ba8ef959e7
[INFO] running `"docker" "start" "-a" "a184586aa284ac313156c0f8c0af9e65aae7defd6e591d024d1800ba8ef959e7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking smallbitvec v2.5.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking dogear v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]     --> src/merge.rs:1683:13
[INFO] [stderr]      |
[INFO] [stderr] 1683 | /             mem::replace(
[INFO] [stderr] 1684 | |                 &mut self.matching_dupes_by_local_parent_guid,
[INFO] [stderr] 1685 | |                 matching_dupes_by_local_parent_guid,
[INFO] [stderr] 1686 | |             );
[INFO] [stderr]      | |______________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]     --> src/merge.rs:1742:13
[INFO] [stderr]      |
[INFO] [stderr] 1742 | /             mem::replace(
[INFO] [stderr] 1743 | |                 &mut self.matching_dupes_by_local_parent_guid,
[INFO] [stderr] 1744 | |                 matching_dupes_by_local_parent_guid,
[INFO] [stderr] 1745 | |             );
[INFO] [stderr]      | |______________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/tree.rs:488:9
[INFO] [stderr]     |
[INFO] [stderr] 488 |         mem::replace(&mut self.0.entries[self.1].content, Some(content));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/tree.rs:658:17
[INFO] [stderr]     |
[INFO] [stderr] 658 |                 mem::replace(&mut self.parent, BuilderEntryParent::Root);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/tree.rs:686:9
[INFO] [stderr]     |
[INFO] [stderr] 686 |         mem::replace(&mut self.parent, new_parent);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]     --> src/merge.rs:1683:13
[INFO] [stderr]      |
[INFO] [stderr] 1683 | /             mem::replace(
[INFO] [stderr] 1684 | |                 &mut self.matching_dupes_by_local_parent_guid,
[INFO] [stderr] 1685 | |                 matching_dupes_by_local_parent_guid,
[INFO] [stderr] 1686 | |             );
[INFO] [stderr]      | |______________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]     --> src/merge.rs:1742:13
[INFO] [stderr]      |
[INFO] [stderr] 1742 | /             mem::replace(
[INFO] [stderr] 1743 | |                 &mut self.matching_dupes_by_local_parent_guid,
[INFO] [stderr] 1744 | |                 matching_dupes_by_local_parent_guid,
[INFO] [stderr] 1745 | |             );
[INFO] [stderr]      | |______________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/tree.rs:488:9
[INFO] [stderr]     |
[INFO] [stderr] 488 |         mem::replace(&mut self.0.entries[self.1].content, Some(content));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/tree.rs:658:17
[INFO] [stderr]     |
[INFO] [stderr] 658 |                 mem::replace(&mut self.parent, BuilderEntryParent::Root);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/tree.rs:686:9
[INFO] [stderr]     |
[INFO] [stderr] 686 |         mem::replace(&mut self.parent, new_parent);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.66s
[INFO] running `"docker" "inspect" "a184586aa284ac313156c0f8c0af9e65aae7defd6e591d024d1800ba8ef959e7"`
[INFO] running `"docker" "rm" "-f" "a184586aa284ac313156c0f8c0af9e65aae7defd6e591d024d1800ba8ef959e7"`
[INFO] [stdout] a184586aa284ac313156c0f8c0af9e65aae7defd6e591d024d1800ba8ef959e7