[INFO] updating cached repository https://github.com/fangerm/cloxrs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 960fbc87340d40994423cf5c2d78308e155bb956
[INFO] checking fangerm/cloxrs against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffangerm%2Fcloxrs" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fangerm/cloxrs 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 git repo https://github.com/fangerm/cloxrs
[INFO] finished tweaking git repo https://github.com/fangerm/cloxrs
[INFO] tweaked toml for git repo https://github.com/fangerm/cloxrs written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/fangerm/cloxrs already has a lockfile, it will not be regenerated
[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-1/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-1/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] f669f3f85f6e5859bea34ff6c5b932743dfbb947e1942c1586458aa5d8941a4e
[INFO] running `"docker" "start" "-a" "f669f3f85f6e5859bea34ff6c5b932743dfbb947e1942c1586458aa5d8941a4e"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking plain_enum v0.7.0
[INFO] [stderr]     Checking loxrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/vm.rs:53:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |             match &self.chunk.code[self.ip - 1].code {
[INFO] [stderr]    |                    --------------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 53 |                         self.runtime_error(&format!("Undefined variable {}.", global));
[INFO] [stderr]    |                         ^^^^ mutable borrow occurs here                       ------ immutable borrow later used here
[INFO] [stderr]    |
[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/vm.rs:63:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |             match &self.chunk.code[self.ip - 1].code {
[INFO] [stderr]    |                    --------------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 63 |                         self.runtime_error(&format!("Undefined variable {}.", global));
[INFO] [stderr]    |                         ^^^^ mutable borrow occurs here                       ------ immutable borrow later used 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/vm.rs:53:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |             match &self.chunk.code[self.ip - 1].code {
[INFO] [stderr]    |                    --------------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 53 |                         self.runtime_error(&format!("Undefined variable {}.", global));
[INFO] [stderr]    |                         ^^^^ mutable borrow occurs here                       ------ immutable borrow later used here
[INFO] [stderr]    |
[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/vm.rs:63:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |             match &self.chunk.code[self.ip - 1].code {
[INFO] [stderr]    |                    --------------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 63 |                         self.runtime_error(&format!("Undefined variable {}.", global));
[INFO] [stderr]    |                         ^^^^ mutable borrow occurs here                       ------ immutable borrow later used 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: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(bind_by_move_pattern_guards)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(bind_by_move_pattern_guards)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.04s
[INFO] running `"docker" "inspect" "f669f3f85f6e5859bea34ff6c5b932743dfbb947e1942c1586458aa5d8941a4e"`
[INFO] running `"docker" "rm" "-f" "f669f3f85f6e5859bea34ff6c5b932743dfbb947e1942c1586458aa5d8941a4e"`
[INFO] [stdout] f669f3f85f6e5859bea34ff6c5b932743dfbb947e1942c1586458aa5d8941a4e