[INFO] crate rmcmc 0.1.0 is already in cache [INFO] extracting crate rmcmc 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/rmcmc/0.1.0 [INFO] extracting crate rmcmc 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rmcmc/0.1.0 [INFO] validating manifest of rmcmc-0.1.0 on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of rmcmc-0.1.0 on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/reg/rmcmc/0.1.0/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing rmcmc-0.1.0 against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] b4864c4e7887619bcfde68905ffeb79848fd9f4c63a2df4466ef10c172743b2f [INFO] running `"docker" "start" "-a" "b4864c4e7887619bcfde68905ffeb79848fd9f4c63a2df4466ef10c172743b2f"` [INFO] [stderr] Compiling approx v0.3.2 [INFO] [stderr] Compiling generic-array v0.11.1 [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] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stderr] --> src/lib.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(associated_type_defaults)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stderr] --> src/lib.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![feature(test)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `rmcmc`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "b4864c4e7887619bcfde68905ffeb79848fd9f4c63a2df4466ef10c172743b2f"` [INFO] running `"docker" "rm" "-f" "b4864c4e7887619bcfde68905ffeb79848fd9f4c63a2df4466ef10c172743b2f"` [INFO] [stdout] b4864c4e7887619bcfde68905ffeb79848fd9f4c63a2df4466ef10c172743b2f