[INFO] crate conftaal 0.1.1 is already in cache
[INFO] extracting crate conftaal 0.1.1 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/conftaal/0.1.1
[INFO] extracting crate conftaal 0.1.1 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/conftaal/0.1.1
[INFO] validating manifest of conftaal-0.1.1 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of conftaal-0.1.1 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing conftaal-0.1.1
[INFO] finished frobbing conftaal-0.1.1
[INFO] frobbed toml for conftaal-0.1.1 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/conftaal/0.1.1/Cargo.toml
[INFO] started frobbing conftaal-0.1.1
[INFO] finished frobbing conftaal-0.1.1
[INFO] frobbed toml for conftaal-0.1.1 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/conftaal/0.1.1/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking conftaal-0.1.1 against try#f45cc3094ee337acd688771b9234318046b0572d for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-7/try#f45cc3094ee337acd688771b9234318046b0572d:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/conftaal/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5efa4618416113b147ca3646733262752c6e80b58fb4dbe8e23e485930a41d47
[INFO] running `"docker" "start" "-a" "5efa4618416113b147ca3646733262752c6e80b58fb4dbe8e23e485930a41d47"`
[INFO] [stderr]     Checking conftaal v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0499]: cannot borrow `*current` as mutable more than once at a time
[INFO] [stderr]    --> src/parse/mod.rs:287:19
[INFO] [stderr]     |
[INFO] [stderr] 269 |   fn find_lhs<'a, 'b>(
[INFO] [stderr]     |                   -- lifetime `'b` defined here
[INFO] [stderr] ...
[INFO] [stderr] 278 |                   op: e_op,
[INFO] [stderr]     |                       ---- first mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 283 |                   expr = Rc::get_mut(match e_op {
[INFO] [stderr]     |  ________________________-
[INFO] [stderr] 284 | |                     Op::UnaryOp{rhs, ..} | Op::BinaryOp{rhs, ..} => rhs
[INFO] [stderr] 285 | |                 }).unwrap();
[INFO] [stderr]     | |__________________- argument requires that `current.op` is borrowed for `'b`
[INFO] [stderr] 286 |               }
[INFO] [stderr] 287 |               _ => return Ok(current)
[INFO] [stderr]     |                              ^^^^^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0499`.
[INFO] [stderr] error: Could not compile `conftaal`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0499]: cannot borrow `*current` as mutable more than once at a time
[INFO] [stderr]    --> src/parse/mod.rs:287:19
[INFO] [stderr]     |
[INFO] [stderr] 269 |   fn find_lhs<'a, 'b>(
[INFO] [stderr]     |                   -- lifetime `'b` defined here
[INFO] [stderr] ...
[INFO] [stderr] 278 |                   op: e_op,
[INFO] [stderr]     |                       ---- first mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 283 |                   expr = Rc::get_mut(match e_op {
[INFO] [stderr]     |  ________________________-
[INFO] [stderr] 284 | |                     Op::UnaryOp{rhs, ..} | Op::BinaryOp{rhs, ..} => rhs
[INFO] [stderr] 285 | |                 }).unwrap();
[INFO] [stderr]     | |__________________- argument requires that `current.op` is borrowed for `'b`
[INFO] [stderr] 286 |               }
[INFO] [stderr] 287 |               _ => return Ok(current)
[INFO] [stderr]     |                              ^^^^^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0499`.
[INFO] [stderr] error: Could not compile `conftaal`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5efa4618416113b147ca3646733262752c6e80b58fb4dbe8e23e485930a41d47"`
[INFO] running `"docker" "rm" "-f" "5efa4618416113b147ca3646733262752c6e80b58fb4dbe8e23e485930a41d47"`
[INFO] [stdout] 5efa4618416113b147ca3646733262752c6e80b58fb4dbe8e23e485930a41d47