[INFO] updating cached repository Chemiseblanc/FEArs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Chemiseblanc/FEArs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Chemiseblanc/FEArs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Chemiseblanc/FEArs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Chemiseblanc/FEArs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Chemiseblanc/FEArs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chemiseblanc/FEArs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chemiseblanc/FEArs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b8cfe16830f60464643a2fb5e81af9d19e5e7816
[INFO] sha for GitHub repo Chemiseblanc/FEArs: b8cfe16830f60464643a2fb5e81af9d19e5e7816
[INFO] validating manifest of Chemiseblanc/FEArs 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 Chemiseblanc/FEArs 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 Chemiseblanc/FEArs
[INFO] finished frobbing Chemiseblanc/FEArs
[INFO] frobbed toml for Chemiseblanc/FEArs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Chemiseblanc/FEArs/Cargo.toml
[INFO] started frobbing Chemiseblanc/FEArs
[INFO] finished frobbing Chemiseblanc/FEArs
[INFO] frobbed toml for Chemiseblanc/FEArs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chemiseblanc/FEArs/Cargo.toml
[INFO] crate Chemiseblanc/FEArs already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing Chemiseblanc/FEArs 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-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chemiseblanc/FEArs:/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] 1c827b832606361cdeab50ebc0f91457c5a9ff34f1224bd8f181cd6d14104ed5
[INFO] running `"docker" "start" "-a" "1c827b832606361cdeab50ebc0f91457c5a9ff34f1224bd8f181cd6d14104ed5"`
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling rand v0.5.6
[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 fea_rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `nodes`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     nodes: Vec<[f64; 2]>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.65s
[INFO] running `"docker" "inspect" "1c827b832606361cdeab50ebc0f91457c5a9ff34f1224bd8f181cd6d14104ed5"`
[INFO] running `"docker" "rm" "-f" "1c827b832606361cdeab50ebc0f91457c5a9ff34f1224bd8f181cd6d14104ed5"`
[INFO] [stdout] 1c827b832606361cdeab50ebc0f91457c5a9ff34f1224bd8f181cd6d14104ed5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chemiseblanc/FEArs:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] a5f9e74097dfb3263b3e95e642cd33b2bc0b02186666ea3f84db819d431ee707
[INFO] running `"docker" "start" "-a" "a5f9e74097dfb3263b3e95e642cd33b2bc0b02186666ea3f84db819d431ee707"`
[INFO] [stderr]    Compiling fea_rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `nodes`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     nodes: Vec<[f64; 2]>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "a5f9e74097dfb3263b3e95e642cd33b2bc0b02186666ea3f84db819d431ee707"`
[INFO] running `"docker" "rm" "-f" "a5f9e74097dfb3263b3e95e642cd33b2bc0b02186666ea3f84db819d431ee707"`
[INFO] [stdout] a5f9e74097dfb3263b3e95e642cd33b2bc0b02186666ea3f84db819d431ee707
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chemiseblanc/FEArs:/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" "test" "--frozen"`
[INFO] [stdout] 686f71faf819a7590299063aa0607c8b3fc5ffbe467ab644378e820980ea35fc
[INFO] running `"docker" "start" "-a" "686f71faf819a7590299063aa0607c8b3fc5ffbe467ab644378e820980ea35fc"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fea_rs-0fa3be0720ee05e3
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "686f71faf819a7590299063aa0607c8b3fc5ffbe467ab644378e820980ea35fc"`
[INFO] running `"docker" "rm" "-f" "686f71faf819a7590299063aa0607c8b3fc5ffbe467ab644378e820980ea35fc"`
[INFO] [stdout] 686f71faf819a7590299063aa0607c8b3fc5ffbe467ab644378e820980ea35fc