[INFO] fetching crate dogear 0.4.0...
[INFO] checking dogear-0.4.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate dogear 0.4.0 into /workspace/builds/worker-41/source
[INFO] validating manifest of crates.io crate dogear 0.4.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-41/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "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-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43881cafedd43eaf382e46bc2e0ae1ca8a1ad8c142f3f0cee5189d1c522ba8c0
[INFO] running `Command { std: "docker" "start" "-a" "43881cafedd43eaf382e46bc2e0ae1ca8a1ad8c142f3f0cee5189d1c522ba8c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43881cafedd43eaf382e46bc2e0ae1ca8a1ad8c142f3f0cee5189d1c522ba8c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43881cafedd43eaf382e46bc2e0ae1ca8a1ad8c142f3f0cee5189d1c522ba8c0", kill_on_drop: false }`
[INFO] [stdout] 43881cafedd43eaf382e46bc2e0ae1ca8a1ad8c142f3f0cee5189d1c522ba8c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6090463c623e793dc9796722c3ba0c7d8b318e49086cf70cee86027b43341e9d
[INFO] running `Command { std: "docker" "start" "-a" "6090463c623e793dc9796722c3ba0c7d8b318e49086cf70cee86027b43341e9d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking smallbitvec v2.5.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking dogear v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/merge.rs:1683:13
[INFO] [stdout]      |
[INFO] [stdout] 1683 | /             mem::replace(
[INFO] [stdout] 1684 | |                 &mut self.matching_dupes_by_local_parent_guid,
[INFO] [stdout] 1685 | |                 matching_dupes_by_local_parent_guid,
[INFO] [stdout] 1686 | |             );
[INFO] [stdout]      | |______________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/merge.rs:1742:13
[INFO] [stdout]      |
[INFO] [stdout] 1742 | /             mem::replace(
[INFO] [stdout] 1743 | |                 &mut self.matching_dupes_by_local_parent_guid,
[INFO] [stdout] 1744 | |                 matching_dupes_by_local_parent_guid,
[INFO] [stdout] 1745 | |             );
[INFO] [stdout]      | |______________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/tree.rs:488:9
[INFO] [stdout]     |
[INFO] [stdout] 488 |         mem::replace(&mut self.0.entries[self.1].content, Some(content));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/tree.rs:658:17
[INFO] [stdout]     |
[INFO] [stdout] 658 |                 mem::replace(&mut self.parent, BuilderEntryParent::Root);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/tree.rs:686:9
[INFO] [stdout]     |
[INFO] [stdout] 686 |         mem::replace(&mut self.parent, new_parent);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/merge.rs:1683:13
[INFO] [stdout]      |
[INFO] [stdout] 1683 | /             mem::replace(
[INFO] [stdout] 1684 | |                 &mut self.matching_dupes_by_local_parent_guid,
[INFO] [stdout] 1685 | |                 matching_dupes_by_local_parent_guid,
[INFO] [stdout] 1686 | |             );
[INFO] [stdout]      | |______________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/merge.rs:1742:13
[INFO] [stdout]      |
[INFO] [stdout] 1742 | /             mem::replace(
[INFO] [stdout] 1743 | |                 &mut self.matching_dupes_by_local_parent_guid,
[INFO] [stdout] 1744 | |                 matching_dupes_by_local_parent_guid,
[INFO] [stdout] 1745 | |             );
[INFO] [stdout]      | |______________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/tree.rs:488:9
[INFO] [stdout]     |
[INFO] [stdout] 488 |         mem::replace(&mut self.0.entries[self.1].content, Some(content));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/tree.rs:658:17
[INFO] [stdout]     |
[INFO] [stdout] 658 |                 mem::replace(&mut self.parent, BuilderEntryParent::Root);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/tree.rs:686:9
[INFO] [stdout]     |
[INFO] [stdout] 686 |         mem::replace(&mut self.parent, new_parent);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.02s
[INFO] running `Command { std: "docker" "inspect" "6090463c623e793dc9796722c3ba0c7d8b318e49086cf70cee86027b43341e9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6090463c623e793dc9796722c3ba0c7d8b318e49086cf70cee86027b43341e9d", kill_on_drop: false }`
[INFO] [stdout] 6090463c623e793dc9796722c3ba0c7d8b318e49086cf70cee86027b43341e9d
