[INFO] updating cached repository tomtung/parabel-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tomtung/parabel-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tomtung/parabel-rs" "work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/tomtung/parabel-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/tomtung/parabel-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tomtung/parabel-rs" "work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/tomtung/parabel-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/tomtung/parabel-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c367075a1defbbecc9b6e66a34720e89db920840
[INFO] sha for GitHub repo tomtung/parabel-rs: c367075a1defbbecc9b6e66a34720e89db920840
[INFO] validating manifest of tomtung/parabel-rs on toolchain master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tomtung/parabel-rs on toolchain try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tomtung/parabel-rs
[INFO] finished frobbing tomtung/parabel-rs
[INFO] frobbed toml for tomtung/parabel-rs written to work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/tomtung/parabel-rs/Cargo.toml
[INFO] started frobbing tomtung/parabel-rs
[INFO] finished frobbing tomtung/parabel-rs
[INFO] frobbed toml for tomtung/parabel-rs written to work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/tomtung/parabel-rs/Cargo.toml
[INFO] crate tomtung/parabel-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tomtung/parabel-rs against try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af for pr-61753
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61753/worker-5/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/tomtung/parabel-rs:/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" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7a50ee45d64cab9c539aff098ed756c5bfc8c135c62128bb083f443dd3ad9154
[INFO] running `"docker" "start" "-a" "7a50ee45d64cab9c539aff098ed756c5bfc8c135c62128bb083f443dd3ad9154"`
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling derive_builder v0.7.1
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]     Checking order-stat v0.1.3
[INFO] [stderr]     Checking pbr v1.0.1
[INFO] [stderr]     Checking alga v0.5.4
[INFO] [stderr]    Compiling darling_core v0.8.5
[INFO] [stderr]     Checking bincode v1.1.2
[INFO] [stderr]     Checking bit-set v0.5.0
[INFO] [stderr]    Compiling darling_macro v0.8.5
[INFO] [stderr]    Compiling darling v0.8.5
[INFO] [stderr]    Compiling derive_builder_core v0.4.1
[INFO] [stderr]     Checking sprs v0.6.4
[INFO] [stderr] warning[E0502]: cannot borrow `indptr` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/sprs-0.6.4/src/sparse/triplet_iter.rs:122:26
[INFO] [stderr]     |
[INFO] [stderr] 122 |             indptr[i] += indptr[i - 1];
[INFO] [stderr]     |             -------------^^^^^^-------
[INFO] [stderr]     |             |            |
[INFO] [stderr]     |             |            immutable borrow occurs here
[INFO] [stderr]     |             mutable borrow occurs here
[INFO] [stderr]     |             mutable borrow later used 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]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking parabel v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.88s
[INFO] running `"docker" "inspect" "7a50ee45d64cab9c539aff098ed756c5bfc8c135c62128bb083f443dd3ad9154"`
[INFO] running `"docker" "rm" "-f" "7a50ee45d64cab9c539aff098ed756c5bfc8c135c62128bb083f443dd3ad9154"`
[INFO] [stdout] 7a50ee45d64cab9c539aff098ed756c5bfc8c135c62128bb083f443dd3ad9154