[INFO] fetching crate semver-store 0.1.0...
[INFO] checking semver-store-0.1.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate semver-store 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate semver-store 0.1.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate semver-store 0.1.0
[INFO] finished tweaking crates.io crate semver-store 0.1.0
[INFO] tweaked toml for crates.io crate semver-store 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 928b8bdcc26cc1c6e43e1e8d48c6e13e491722a4e949bf79e3db65f1315e51c7
[INFO] running `"docker" "start" "-a" "928b8bdcc26cc1c6e43e1e8d48c6e13e491722a4e949bf79e3db65f1315e51c7"`
[INFO] [stderr]     Checking semver-store v0.1.0 (/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: 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "928b8bdcc26cc1c6e43e1e8d48c6e13e491722a4e949bf79e3db65f1315e51c7"`
[INFO] running `"docker" "rm" "-f" "928b8bdcc26cc1c6e43e1e8d48c6e13e491722a4e949bf79e3db65f1315e51c7"`
[INFO] [stdout] 928b8bdcc26cc1c6e43e1e8d48c6e13e491722a4e949bf79e3db65f1315e51c7