[INFO] crate tokio-bincode 0.1.0 is already in cache
[INFO] checking tokio-bincode-0.1.0 against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] extracting crate tokio-bincode 0.1.0 into work/builds/worker-4/source
[INFO] validating manifest of crates.io crate tokio-bincode 0.1.0 on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate tokio-bincode 0.1.0
[INFO] finished tweaking crates.io crate tokio-bincode 0.1.0
[INFO] tweaked toml for crates.io crate tokio-bincode 0.1.0 written to work/builds/worker-4/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a2c7134e4b52b472a19111963c49b7df5c0a7f8d9682e41d06526476c17e07a5
[INFO] running `"docker" "start" "-a" "a2c7134e4b52b472a19111963c49b7df5c0a7f8d9682e41d06526476c17e07a5"`
[INFO] [stderr]     Checking tokio-bincode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: cannot borrow `*buf` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/lib.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |             let mut reader = Reader::new(&buf[..]);
[INFO] [stderr]    |                                           --- immutable borrow occurs here
[INFO] [stderr] 69 |             let message = self.config.deserialize_from(&mut reader)?;
[INFO] [stderr] 70 |             buf.split_to(reader.amount());
[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 `*buf` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/lib.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |             let mut reader = Reader::new(&buf[..]);
[INFO] [stderr]    |                                           --- immutable borrow occurs here
[INFO] [stderr] 69 |             let message = self.config.deserialize_from(&mut reader)?;
[INFO] [stderr] 70 |             buf.split_to(reader.amount());
[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 2.32s
[INFO] running `"docker" "inspect" "a2c7134e4b52b472a19111963c49b7df5c0a7f8d9682e41d06526476c17e07a5"`
[INFO] running `"docker" "rm" "-f" "a2c7134e4b52b472a19111963c49b7df5c0a7f8d9682e41d06526476c17e07a5"`
[INFO] [stdout] a2c7134e4b52b472a19111963c49b7df5c0a7f8d9682e41d06526476c17e07a5