[INFO] crate semver-store 0.2.0 is already in cache
[INFO] checking semver-store-0.2.0 against try#8a5e87609850cdd8679aada01eb0f3062f254ca8 for pr-71140
[INFO] extracting crate semver-store 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate semver-store 0.2.0 on toolchain 8a5e87609850cdd8679aada01eb0f3062f254ca8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate semver-store 0.2.0
[INFO] finished tweaking crates.io crate semver-store 0.2.0
[INFO] tweaked toml for crates.io crate semver-store 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1520a0f80e5290ce757c481cf4338b1b8d91e53ad1af8db83de744fce2fd377e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "1520a0f80e5290ce757c481cf4338b1b8d91e53ad1af8db83de744fce2fd377e"`
[INFO] [stderr]     Checking semver-store v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/node.rs:32:26
[INFO] [stderr]    |
[INFO] [stderr] 31 |         match self.children.keys().max() {
[INFO] [stderr]    |               ------------- immutable borrow occurs here
[INFO] [stderr] 32 |             Some(max) => self.get_child(*max),
[INFO] [stderr]    |                          ^^^^           ---- immutable borrow later used here
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/node.rs:32:26
[INFO] [stderr]    |
[INFO] [stderr] 31 |         match self.children.keys().max() {
[INFO] [stderr]    |               ------------- immutable borrow occurs here
[INFO] [stderr] 32 |             Some(max) => self.get_child(*max),
[INFO] [stderr]    |                          ^^^^           ---- immutable borrow later used here
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "1520a0f80e5290ce757c481cf4338b1b8d91e53ad1af8db83de744fce2fd377e"`
[INFO] running `"docker" "rm" "-f" "1520a0f80e5290ce757c481cf4338b1b8d91e53ad1af8db83de744fce2fd377e"`
[INFO] [stdout] 1520a0f80e5290ce757c481cf4338b1b8d91e53ad1af8db83de744fce2fd377e