[INFO] updating cached repository agraven/rusty-calculator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/agraven/rusty-calculator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/agraven/rusty-calculator" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/agraven/rusty-calculator"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/agraven/rusty-calculator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/agraven/rusty-calculator" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/agraven/rusty-calculator"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/agraven/rusty-calculator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8329b708e3a69571730be9386e830f969bb7e838
[INFO] sha for GitHub repo agraven/rusty-calculator: 8329b708e3a69571730be9386e830f969bb7e838
[INFO] validating manifest of agraven/rusty-calculator on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of agraven/rusty-calculator on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing agraven/rusty-calculator
[INFO] finished frobbing agraven/rusty-calculator
[INFO] frobbed toml for agraven/rusty-calculator written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/agraven/rusty-calculator/Cargo.toml
[INFO] started frobbing agraven/rusty-calculator
[INFO] finished frobbing agraven/rusty-calculator
[INFO] frobbed toml for agraven/rusty-calculator written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/agraven/rusty-calculator/Cargo.toml
[INFO] crate agraven/rusty-calculator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking agraven/rusty-calculator against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/agraven/rusty-calculator:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5cbb41ec5f5ae0eed01f7e8d2cafed97379ec9028c92e6a3abb9e06436ab64bc
[INFO] running `"docker" "start" "-a" "5cbb41ec5f5ae0eed01f7e8d2cafed97379ec9028c92e6a3abb9e06436ab64bc"`
[INFO] [stderr]     Checking rusty-calculator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `=>`, `if`, or `|`, found `(`
[INFO] [stderr]   --> src/calculate.rs:56:6
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 _(ref mut prev_val: f64) => *prev_val = prev_val.powf(val),
[INFO] [stderr]    |                  ^ expected one of `=>`, `if`, or `|` here
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `=>`, `if`, or `|`, found `(`
[INFO] [stderr]   --> src/calculate.rs:56:6
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 _(ref mut prev_val: f64) => *prev_val = prev_val.powf(val),
[INFO] [stderr]    |                  ^ expected one of `=>`, `if`, or `|` here
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/calculate.rs:64:4
[INFO] [stderr]    |
[INFO] [stderr] 64 |             operations.remove(index);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/calculate.rs:64:4
[INFO] [stderr]    |
[INFO] [stderr] 64 |             operations.remove(index);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rusty-calculator`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rusty-calculator`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5cbb41ec5f5ae0eed01f7e8d2cafed97379ec9028c92e6a3abb9e06436ab64bc"`
[INFO] running `"docker" "rm" "-f" "5cbb41ec5f5ae0eed01f7e8d2cafed97379ec9028c92e6a3abb9e06436ab64bc"`
[INFO] [stdout] 5cbb41ec5f5ae0eed01f7e8d2cafed97379ec9028c92e6a3abb9e06436ab64bc