[INFO] fetching crate jazz 0.2.2...
[INFO] checking jazz-0.2.2 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate jazz 0.2.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate jazz 0.2.2 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jazz 0.2.2
[INFO] finished tweaking crates.io crate jazz 0.2.2
[INFO] tweaked toml for crates.io crate jazz 0.2.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0525f3b0e13ea11428469727d0191e40c93ddaef12df6dc4fcb50cc35e7ff7a8
[INFO] running `Command { std: "docker" "start" "-a" "0525f3b0e13ea11428469727d0191e40c93ddaef12df6dc4fcb50cc35e7ff7a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0525f3b0e13ea11428469727d0191e40c93ddaef12df6dc4fcb50cc35e7ff7a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0525f3b0e13ea11428469727d0191e40c93ddaef12df6dc4fcb50cc35e7ff7a8", kill_on_drop: false }`
[INFO] [stdout] 0525f3b0e13ea11428469727d0191e40c93ddaef12df6dc4fcb50cc35e7ff7a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcf7fd6dfe0ba6f51002f16fa429ca28ca17b9f592fc5fd3eb08835fca45c9c6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dcf7fd6dfe0ba6f51002f16fa429ca28ca17b9f592fc5fd3eb08835fca45c9c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking jazz v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/machine.rs:461:73
[INFO] [stdout]     |
[INFO] [stdout] 461 |                         obj.store_at(self, vec![target, key, value], 0);;
[INFO] [stdout]     |                                                                         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/machine.rs:461:73
[INFO] [stdout]     |
[INFO] [stdout] 461 |                         obj.store_at(self, vec![target, key, value], 0);;
[INFO] [stdout]     |                                                                         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:344:33
[INFO] [stdout]     |
[INFO] [stdout] 343 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 344 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:377:33
[INFO] [stdout]     |
[INFO] [stdout] 376 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 377 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:354:33
[INFO] [stdout]     |
[INFO] [stdout] 353 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 354 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:364:33
[INFO] [stdout]     |
[INFO] [stdout] 363 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 364 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:312:25
[INFO] [stdout]     |
[INFO] [stdout] 311 |                         let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                   ----------- immutable borrow occurs here
[INFO] [stdout] 312 |                         self.branch(*idx);
[INFO] [stdout]     |                         ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:323:33
[INFO] [stdout]     |
[INFO] [stdout] 322 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 323 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 332 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 333 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:404:25
[INFO] [stdout]     |
[INFO] [stdout] 403 |                         let value = self.globals.get(index).unwrap();
[INFO] [stdout]     |                                     ------------ immutable borrow occurs here
[INFO] [stdout] 404 |                         self.set(*reg, *value);
[INFO] [stdout]     |                         ^^^^           ------ immutable borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:344:33
[INFO] [stdout]     |
[INFO] [stdout] 343 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 344 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:377:33
[INFO] [stdout]     |
[INFO] [stdout] 376 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 377 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:354:33
[INFO] [stdout]     |
[INFO] [stdout] 353 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 354 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:364:33
[INFO] [stdout]     |
[INFO] [stdout] 363 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 364 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:312:25
[INFO] [stdout]     |
[INFO] [stdout] 311 |                         let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                   ----------- immutable borrow occurs here
[INFO] [stdout] 312 |                         self.branch(*idx);
[INFO] [stdout]     |                         ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:323:33
[INFO] [stdout]     |
[INFO] [stdout] 322 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 323 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 332 | ...                   let idx = self.labels.get(lbl_id).unwrap();
[INFO] [stdout]     |                                 ----------- immutable borrow occurs here
[INFO] [stdout] 333 | ...                   self.branch(*idx);
[INFO] [stdout]     |                       ^^^^        ---- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/machine.rs:404:25
[INFO] [stdout]     |
[INFO] [stdout] 403 |                         let value = self.globals.get(index).unwrap();
[INFO] [stdout]     |                                     ------------ immutable borrow occurs here
[INFO] [stdout] 404 |                         self.set(*reg, *value);
[INFO] [stdout]     |                         ^^^^           ------ immutable borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.55s
[INFO] running `Command { std: "docker" "inspect" "dcf7fd6dfe0ba6f51002f16fa429ca28ca17b9f592fc5fd3eb08835fca45c9c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcf7fd6dfe0ba6f51002f16fa429ca28ca17b9f592fc5fd3eb08835fca45c9c6", kill_on_drop: false }`
[INFO] [stdout] dcf7fd6dfe0ba6f51002f16fa429ca28ca17b9f592fc5fd3eb08835fca45c9c6
