[INFO] updating cached repository AxelNilsson/studentbostader
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/AxelNilsson/studentbostader
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/AxelNilsson/studentbostader" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/AxelNilsson/studentbostader"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/AxelNilsson/studentbostader'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AxelNilsson/studentbostader" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/AxelNilsson/studentbostader"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/AxelNilsson/studentbostader'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1a31b96e14d7ed0ee301e9ab184959136850a16a
[INFO] sha for GitHub repo AxelNilsson/studentbostader: 1a31b96e14d7ed0ee301e9ab184959136850a16a
[INFO] validating manifest of AxelNilsson/studentbostader on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of AxelNilsson/studentbostader on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing AxelNilsson/studentbostader
[INFO] finished frobbing AxelNilsson/studentbostader
[INFO] frobbed toml for AxelNilsson/studentbostader written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/AxelNilsson/studentbostader/Cargo.toml
[INFO] started frobbing AxelNilsson/studentbostader
[INFO] finished frobbing AxelNilsson/studentbostader
[INFO] frobbed toml for AxelNilsson/studentbostader written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/AxelNilsson/studentbostader/Cargo.toml
[INFO] crate AxelNilsson/studentbostader already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking AxelNilsson/studentbostader against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-6/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/AxelNilsson/studentbostader:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 714a1b91c1237d2af359e16a03907a5305839400aae9a32961dfd3f00dbbdefd
[INFO] running `"docker" "start" "-a" "714a1b91c1237d2af359e16a03907a5305839400aae9a32961dfd3f00dbbdefd"`
[INFO] [stderr]     Checking hyper v0.12.19
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking reqwest v0.9.5
[INFO] [stderr]     Checking student v0.1.0 (/opt/crater/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 13.48s
[INFO] running `"docker" "inspect" "714a1b91c1237d2af359e16a03907a5305839400aae9a32961dfd3f00dbbdefd"`
[INFO] running `"docker" "rm" "-f" "714a1b91c1237d2af359e16a03907a5305839400aae9a32961dfd3f00dbbdefd"`
[INFO] [stdout] 714a1b91c1237d2af359e16a03907a5305839400aae9a32961dfd3f00dbbdefd