[INFO] updating cached repository lambdahands/advent-of-code-2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lambdahands/advent-of-code-2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lambdahands/advent-of-code-2018" "work/ex/beta-1.37-6/sources/1.36.0/gh/lambdahands/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/lambdahands/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lambdahands/advent-of-code-2018" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lambdahands/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lambdahands/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 507511f034a8c043b6116814d4bada930257965b
[INFO] sha for GitHub repo lambdahands/advent-of-code-2018: 507511f034a8c043b6116814d4bada930257965b
[INFO] validating manifest of lambdahands/advent-of-code-2018 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lambdahands/advent-of-code-2018 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lambdahands/advent-of-code-2018
[INFO] finished frobbing lambdahands/advent-of-code-2018
[INFO] frobbed toml for lambdahands/advent-of-code-2018 written to work/ex/beta-1.37-6/sources/1.36.0/gh/lambdahands/advent-of-code-2018/Cargo.toml
[INFO] started frobbing lambdahands/advent-of-code-2018
[INFO] finished frobbing lambdahands/advent-of-code-2018
[INFO] frobbed toml for lambdahands/advent-of-code-2018 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lambdahands/advent-of-code-2018/Cargo.toml
[INFO] crate lambdahands/advent-of-code-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing lambdahands/advent-of-code-2018 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lambdahands/advent-of-code-2018:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 1d6a73d02c15b5324b366adb446d72017e20e4ec1a4482976f3a8d06279e41b2
[INFO] running `"docker" "start" "-a" "1d6a73d02c15b5324b366adb446d72017e20e4ec1a4482976f3a8d06279e41b2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling approx v0.3.0
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling alga v0.7.2
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling nalgebra v0.16.11
[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-0.16.11/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 advent-of-code v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.64s
[INFO] running `"docker" "inspect" "1d6a73d02c15b5324b366adb446d72017e20e4ec1a4482976f3a8d06279e41b2"`
[INFO] running `"docker" "rm" "-f" "1d6a73d02c15b5324b366adb446d72017e20e4ec1a4482976f3a8d06279e41b2"`
[INFO] [stdout] 1d6a73d02c15b5324b366adb446d72017e20e4ec1a4482976f3a8d06279e41b2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lambdahands/advent-of-code-2018:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 25dd3be26feca3021bfa86d5b8798ebbd4c5315578549be82cea49fa859e5e6f
[INFO] running `"docker" "start" "-a" "25dd3be26feca3021bfa86d5b8798ebbd4c5315578549be82cea49fa859e5e6f"`
[INFO] [stderr]    Compiling advent-of-code v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "25dd3be26feca3021bfa86d5b8798ebbd4c5315578549be82cea49fa859e5e6f"`
[INFO] running `"docker" "rm" "-f" "25dd3be26feca3021bfa86d5b8798ebbd4c5315578549be82cea49fa859e5e6f"`
[INFO] [stdout] 25dd3be26feca3021bfa86d5b8798ebbd4c5315578549be82cea49fa859e5e6f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lambdahands/advent-of-code-2018:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] d769c17c77ea00c84b42c58a2ae482c0ec6bb923e536e6c613323648fcc92bc2
[INFO] running `"docker" "start" "-a" "d769c17c77ea00c84b42c58a2ae482c0ec6bb923e536e6c613323648fcc92bc2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/advent_of_code-316168b24d8bed48
[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" "d769c17c77ea00c84b42c58a2ae482c0ec6bb923e536e6c613323648fcc92bc2"`
[INFO] running `"docker" "rm" "-f" "d769c17c77ea00c84b42c58a2ae482c0ec6bb923e536e6c613323648fcc92bc2"`
[INFO] [stdout] d769c17c77ea00c84b42c58a2ae482c0ec6bb923e536e6c613323648fcc92bc2