Dec 17 11:24:23.155 INFO checking yishn/Kalk against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 11:24:23.156 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/yishn/Kalk:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 11:24:23.664 INFO [stdout] c035d7b1d91e8f7134a2ca8b31700cdb5b44ee70770030c5e87f6a1e8b6f09c8
Dec 17 11:24:23.670 INFO running `"docker" "start" "-a" "c035d7b1d91e8f7134a2ca8b31700cdb5b44ee70770030c5e87f6a1e8b6f09c8"`
Dec 17 11:24:25.564 INFO [stderr]    Compiling pest v1.0.6
Dec 17 11:24:27.074 INFO [stderr]    Compiling pest_derive v1.0.7
Dec 17 11:24:33.914 INFO [stderr]     Checking kalk v0.1.0 (/opt/crater/workdir)
Dec 17 11:24:35.136 INFO [stderr] warning: method is never used: `new_finite`
Dec 17 11:24:35.136 INFO [stderr]    --> src/types.rs:208:5
Dec 17 11:24:35.137 INFO [stderr]     |
Dec 17 11:24:35.137 INFO [stderr] 208 |     fn new_finite(start: f64, step: f64, stop: f64) -> ArithmeticProgression {
Dec 17 11:24:35.137 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:24:35.137 INFO [stderr]     |
Dec 17 11:24:35.137 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 11:24:35.137 INFO [stderr] 
Dec 17 11:24:35.137 INFO [stderr] warning: method is never used: `new_infinite`
Dec 17 11:24:35.137 INFO [stderr]    --> src/types.rs:212:5
Dec 17 11:24:35.137 INFO [stderr]     |
Dec 17 11:24:35.137 INFO [stderr] 212 |     fn new_infinite(start: f64, step: f64) -> ArithmeticProgression {
Dec 17 11:24:35.137 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:24:35.137 INFO [stderr] 
Dec 17 11:24:35.493 INFO [stderr] warning: method is never used: `new_finite`
Dec 17 11:24:35.493 INFO [stderr]    --> src/types.rs:208:5
Dec 17 11:24:35.494 INFO [stderr]     |
Dec 17 11:24:35.494 INFO [stderr] 208 |     fn new_finite(start: f64, step: f64, stop: f64) -> ArithmeticProgression {
Dec 17 11:24:35.494 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:24:35.495 INFO [stderr]     |
Dec 17 11:24:35.495 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 11:24:35.495 INFO [stderr] 
Dec 17 11:24:35.495 INFO [stderr] warning: method is never used: `new_infinite`
Dec 17 11:24:35.496 INFO [stderr]    --> src/types.rs:212:5
Dec 17 11:24:35.496 INFO [stderr]     |
Dec 17 11:24:35.496 INFO [stderr] 212 |     fn new_infinite(start: f64, step: f64) -> ArithmeticProgression {
Dec 17 11:24:35.496 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:24:35.496 INFO [stderr] 
Dec 17 11:24:35.564 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.04s
Dec 17 11:24:37.499 INFO running `"docker" "inspect" "c035d7b1d91e8f7134a2ca8b31700cdb5b44ee70770030c5e87f6a1e8b6f09c8"`
Dec 17 11:24:37.790 INFO running `"docker" "rm" "-f" "c035d7b1d91e8f7134a2ca8b31700cdb5b44ee70770030c5e87f6a1e8b6f09c8"`
Dec 17 11:24:38.124 INFO [stdout] c035d7b1d91e8f7134a2ca8b31700cdb5b44ee70770030c5e87f6a1e8b6f09c8