[INFO] updating cached repository https://github.com/AxelNilsson/studentbostader
[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] 1a31b96e14d7ed0ee301e9ab184959136850a16a
[INFO] checking AxelNilsson/studentbostader against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxelNilsson%2Fstudentbostader" "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/AxelNilsson/studentbostader 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/AxelNilsson/studentbostader
[INFO] finished tweaking git repo https://github.com/AxelNilsson/studentbostader
[INFO] tweaked toml for git repo https://github.com/AxelNilsson/studentbostader written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/AxelNilsson/studentbostader 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] 8d80ef28bb355e4903d21afab2723efc77e874f29047b04c46454f9122673c8c
[INFO] running `"docker" "start" "-a" "8d80ef28bb355e4903d21afab2723efc77e874f29047b04c46454f9122673c8c"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking openssl-sys v0.9.40
[INFO] [stderr]     Checking hyper v0.12.19
[INFO] [stderr]     Checking openssl v0.10.16
[INFO] [stderr]     Checking native-tls v0.2.2
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking reqwest v0.9.5
[INFO] [stderr]     Checking student v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: cannot borrow `apartment_hashmap` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/main.rs:326:36
[INFO] [stderr]     |
[INFO] [stderr] 325 |         match apartment_hashmap.get(&new_key) {
[INFO] [stderr]     |               ----------------- immutable borrow occurs here
[INFO] [stderr] 326 |             Some(current_count) => apartment_hashmap.insert(new_key, current_count + 1),
[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 `apartment_hashmap` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/main.rs:326:36
[INFO] [stderr]     |
[INFO] [stderr] 325 |         match apartment_hashmap.get(&new_key) {
[INFO] [stderr]     |               ----------------- immutable borrow occurs here
[INFO] [stderr] 326 |             Some(current_count) => apartment_hashmap.insert(new_key, current_count + 1),
[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 19.35s
[INFO] running `"docker" "inspect" "8d80ef28bb355e4903d21afab2723efc77e874f29047b04c46454f9122673c8c"`
[INFO] running `"docker" "rm" "-f" "8d80ef28bb355e4903d21afab2723efc77e874f29047b04c46454f9122673c8c"`
[INFO] [stdout] 8d80ef28bb355e4903d21afab2723efc77e874f29047b04c46454f9122673c8c