[INFO] crate conftaal 0.1.1 is already in cache
[INFO] extracting crate conftaal 0.1.1 into work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/conftaal/0.1.1
[INFO] extracting crate conftaal 0.1.1 into work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/conftaal/0.1.1
[INFO] validating manifest of conftaal-0.1.1 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of conftaal-0.1.1 on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-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-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/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-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/conftaal/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking conftaal-0.1.1 against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-0/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/conftaal/0.1.1:/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ef0f3b5fd5648ef89ac53e5ab84e3b53e41208084e354e98b162d43360368869
[INFO] running `"docker" "start" "-a" "ef0f3b5fd5648ef89ac53e5ab84e3b53e41208084e354e98b162d43360368869"`
[INFO] [stderr]     Checking conftaal v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning[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]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr] warning[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]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `"docker" "inspect" "ef0f3b5fd5648ef89ac53e5ab84e3b53e41208084e354e98b162d43360368869"`
[INFO] running `"docker" "rm" "-f" "ef0f3b5fd5648ef89ac53e5ab84e3b53e41208084e354e98b162d43360368869"`
[INFO] [stdout] ef0f3b5fd5648ef89ac53e5ab84e3b53e41208084e354e98b162d43360368869