[INFO] updating cached repository T3rj3/PolyalphabeticCipher
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/T3rj3/PolyalphabeticCipher
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/T3rj3/PolyalphabeticCipher" "work/ex/beta-1.37-6/sources/1.36.0/gh/T3rj3/PolyalphabeticCipher"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/T3rj3/PolyalphabeticCipher'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/T3rj3/PolyalphabeticCipher" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/T3rj3/PolyalphabeticCipher"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/T3rj3/PolyalphabeticCipher'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d1b6f7b97275d40312b657181b33e4df9270b171
[INFO] sha for GitHub repo T3rj3/PolyalphabeticCipher: d1b6f7b97275d40312b657181b33e4df9270b171
[INFO] validating manifest of T3rj3/PolyalphabeticCipher 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 T3rj3/PolyalphabeticCipher 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 T3rj3/PolyalphabeticCipher
[INFO] finished frobbing T3rj3/PolyalphabeticCipher
[INFO] frobbed toml for T3rj3/PolyalphabeticCipher written to work/ex/beta-1.37-6/sources/1.36.0/gh/T3rj3/PolyalphabeticCipher/Cargo.toml
[INFO] started frobbing T3rj3/PolyalphabeticCipher
[INFO] finished frobbing T3rj3/PolyalphabeticCipher
[INFO] frobbed toml for T3rj3/PolyalphabeticCipher written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/T3rj3/PolyalphabeticCipher/Cargo.toml
[INFO] crate T3rj3/PolyalphabeticCipher 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 T3rj3/PolyalphabeticCipher 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/T3rj3/PolyalphabeticCipher:/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] db125b49b524b829e531883ad967a09f957d05685abfb2372c2182b692ef685c
[INFO] running `"docker" "start" "-a" "db125b49b524b829e531883ad967a09f957d05685abfb2372c2182b692ef685c"`
[INFO] [stderr]    Compiling encrypter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `.`, `;`, `?`, or an operator, found `let`
[INFO] [stderr]   --> src/main.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let mut key_file = File::open(key_filename).expect("Could not open keyfile")
[INFO] [stderr]    |                                                                                 - help: a semicolon may be missing here
[INFO] [stderr] 51 |     let mut key_buffer = Vec::new();
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `encrypter`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "db125b49b524b829e531883ad967a09f957d05685abfb2372c2182b692ef685c"`
[INFO] running `"docker" "rm" "-f" "db125b49b524b829e531883ad967a09f957d05685abfb2372c2182b692ef685c"`
[INFO] [stdout] db125b49b524b829e531883ad967a09f957d05685abfb2372c2182b692ef685c