[INFO] fetching crate euc 0.3.0...
[INFO] extracting crate euc 0.3.0 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/euc/0.3.0
[INFO] extracting crate euc 0.3.0 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/euc/0.3.0
[INFO] validating manifest of euc-0.3.0 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of euc-0.3.0 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing euc-0.3.0
[INFO] finished frobbing euc-0.3.0
[INFO] frobbed toml for euc-0.3.0 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/euc/0.3.0/Cargo.toml
[INFO] started frobbing euc-0.3.0
[INFO] finished frobbing euc-0.3.0
[INFO] frobbed toml for euc-0.3.0 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/euc/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking euc-0.3.0 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-2/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/euc/0.3.0:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 39f27db05bd47b56f2fc66606c13684b086c46d5a655bc01c4d82a94b3c4f1a4
[INFO] running `"docker" "start" "-a" "39f27db05bd47b56f2fc66606c13684b086c46d5a655bc01c4d82a94b3c4f1a4"`
[INFO] [stderr]     Checking tobj v0.1.7
[INFO] [stderr]    Compiling vek v0.9.7
[INFO] [stderr] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1897:31
[INFO] [stderr]      |
[INFO] [stderr] 1897 |                 rows[3][0] += rows[0].dot(t);
[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] 3952 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1898:31
[INFO] [stderr]      |
[INFO] [stderr] 1898 |                 rows[3][1] += rows[1].dot(t);
[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] 3952 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1899:31
[INFO] [stderr]      |
[INFO] [stderr] 1899 |                 rows[3][2] += rows[2].dot(t);
[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] 3952 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1900:31
[INFO] [stderr]      |
[INFO] [stderr] 1900 |                 rows[3][3] += rows[3].dot(t);
[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] 3952 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1897:31
[INFO] [stderr]      |
[INFO] [stderr] 1897 |                 rows[3][0] += rows[0].dot(t);
[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] 3952 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1898:31
[INFO] [stderr]      |
[INFO] [stderr] 1898 |                 rows[3][1] += rows[1].dot(t);
[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] 3952 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1899:31
[INFO] [stderr]      |
[INFO] [stderr] 1899 |                 rows[3][2] += rows[2].dot(t);
[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] 3952 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1900:31
[INFO] [stderr]      |
[INFO] [stderr] 1900 |                 rows[3][3] += rows[3].dot(t);
[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] 3952 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1897:31
[INFO] [stderr]      |
[INFO] [stderr] 1897 |                 rows[3][0] += rows[0].dot(t);
[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] 3974 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1898:31
[INFO] [stderr]      |
[INFO] [stderr] 1898 |                 rows[3][1] += rows[1].dot(t);
[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] 3974 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1899:31
[INFO] [stderr]      |
[INFO] [stderr] 1899 |                 rows[3][2] += rows[2].dot(t);
[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] 3974 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1900:31
[INFO] [stderr]      |
[INFO] [stderr] 1900 |                 rows[3][3] += rows[3].dot(t);
[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] 3974 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1897:31
[INFO] [stderr]      |
[INFO] [stderr] 1897 |                 rows[3][0] += rows[0].dot(t);
[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] 3974 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1898:31
[INFO] [stderr]      |
[INFO] [stderr] 1898 |                 rows[3][1] += rows[1].dot(t);
[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] 3974 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1899:31
[INFO] [stderr]      |
[INFO] [stderr] 1899 |                 rows[3][2] += rows[2].dot(t);
[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] 3974 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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] warning[E0502]: cannot borrow `rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vek-0.9.7/src/mat.rs:1900:31
[INFO] [stderr]      |
[INFO] [stderr] 1900 |                 rows[3][3] += rows[3].dot(t);
[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] 3974 |     mat_declare_modules!{}
[INFO] [stderr]      |     ---------------------- in this macro invocation
[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 euc v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.80s
[INFO] running `"docker" "inspect" "39f27db05bd47b56f2fc66606c13684b086c46d5a655bc01c4d82a94b3c4f1a4"`
[INFO] running `"docker" "rm" "-f" "39f27db05bd47b56f2fc66606c13684b086c46d5a655bc01c4d82a94b3c4f1a4"`
[INFO] [stdout] 39f27db05bd47b56f2fc66606c13684b086c46d5a655bc01c4d82a94b3c4f1a4