[INFO] fetching crate rmcmc 0.1.0...
[INFO] extracting crate rmcmc 0.1.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rmcmc/0.1.0
[INFO] extracting crate rmcmc 0.1.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/rmcmc/0.1.0
[INFO] validating manifest of rmcmc-0.1.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rmcmc-0.1.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rmcmc-0.1.0
[INFO] finished frobbing rmcmc-0.1.0
[INFO] frobbed toml for rmcmc-0.1.0 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rmcmc/0.1.0/Cargo.toml
[INFO] started frobbing rmcmc-0.1.0
[INFO] finished frobbing rmcmc-0.1.0
[INFO] frobbed toml for rmcmc-0.1.0 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/rmcmc/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rv v0.4.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rmcmc-0.1.0 against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rmcmc/0.1.0:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] a46d1937f1d3d7f1599a0bbe46b8b1d4a674cc3b7d05a724af9ffeda08cc8887
[INFO] running `"docker" "start" "-a" "a46d1937f1d3d7f1599a0bbe46b8b1d4a674cc3b7d05a724af9ffeda08cc8887"`
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling special v0.7.8
[INFO] [stderr]    Compiling alga v0.7.2
[INFO] [stderr]    Compiling nalgebra v0.16.13
[INFO] [stderr] warning[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.16.13/src/base/cg.rs:291:44
[INFO] [stderr]     |
[INFO] [stderr] 291 |                 self[(j, i)] += shift[j] * self[(D::dim() - 1, i)];
[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]    Compiling rv v0.4.1
[INFO] [stderr] warning[E0502]: cannot borrow `summed` as immutable because it is also borrowed as mutable
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rv-0.4.1/src/misc/func.rs:55:22
[INFO] [stderr]    |
[INFO] [stderr] 55 |         summed[i] += summed[i - 1].clone();
[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]    Compiling rmcmc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.43s
[INFO] running `"docker" "inspect" "a46d1937f1d3d7f1599a0bbe46b8b1d4a674cc3b7d05a724af9ffeda08cc8887"`
[INFO] running `"docker" "rm" "-f" "a46d1937f1d3d7f1599a0bbe46b8b1d4a674cc3b7d05a724af9ffeda08cc8887"`
[INFO] [stdout] a46d1937f1d3d7f1599a0bbe46b8b1d4a674cc3b7d05a724af9ffeda08cc8887
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rmcmc/0.1.0:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] bfcc81866a09d4f8390157e8f890a2dfefdddd192d07c5dc38230aad159c07ea
[INFO] running `"docker" "start" "-a" "bfcc81866a09d4f8390157e8f890a2dfefdddd192d07c5dc38230aad159c07ea"`
[INFO] [stderr]    Compiling assert v0.7.4
[INFO] [stderr]    Compiling rmcmc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.89s
[INFO] running `"docker" "inspect" "bfcc81866a09d4f8390157e8f890a2dfefdddd192d07c5dc38230aad159c07ea"`
[INFO] running `"docker" "rm" "-f" "bfcc81866a09d4f8390157e8f890a2dfefdddd192d07c5dc38230aad159c07ea"`
[INFO] [stdout] bfcc81866a09d4f8390157e8f890a2dfefdddd192d07c5dc38230aad159c07ea
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rmcmc/0.1.0:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] 1cb39d453d1cb5cd465ccd423fbfbf0c75c423f91aecf593c85a79bfa9689dca
[INFO] running `"docker" "start" "-a" "1cb39d453d1cb5cd465ccd423fbfbf0c75c423f91aecf593c85a79bfa9689dca"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rmcmc-db52bcd2a7026384
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test lens::tests::simple ... ok
[INFO] [stdout] test lens::tests::simple_macro ... ok
[INFO] [stdout] test parameter::tests::new ... ok
[INFO] [stdout] test steppers::srwm::tests::uniform_posterior_no_warmup ... ok
[INFO] [stdout] test steppers::srwm::tests::gaussian_likelihood_uniform_prior ... ok
[INFO] [stdout] test steppers::srwm::tests::uniform_posterior_warmup ... ok
[INFO] [stdout] test steppers::srwm::tests::gaussian_fit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rmcmc
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lens.rs - lens::Lens (line 8) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lens.rs - lens::Lens (line 8) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `trolley`
[INFO] [stdout]  --> src/lens.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use] extern crate trolley;
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lens.rs - lens::Lens (line 8)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "1cb39d453d1cb5cd465ccd423fbfbf0c75c423f91aecf593c85a79bfa9689dca"`
[INFO] running `"docker" "rm" "-f" "1cb39d453d1cb5cd465ccd423fbfbf0c75c423f91aecf593c85a79bfa9689dca"`
[INFO] [stdout] 1cb39d453d1cb5cd465ccd423fbfbf0c75c423f91aecf593c85a79bfa9689dca