[INFO] updating cached repository robsyme/rustalind
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/robsyme/rustalind
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/robsyme/rustalind" "work/ex/beta-1.38-1/sources/1.37.0/gh/robsyme/rustalind"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/robsyme/rustalind'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/robsyme/rustalind" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robsyme/rustalind"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robsyme/rustalind'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c58292909404094c31e5c6d9eac9f87b1e6ddd57
[INFO] sha for GitHub repo robsyme/rustalind: c58292909404094c31e5c6d9eac9f87b1e6ddd57
[INFO] validating manifest of robsyme/rustalind 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 robsyme/rustalind 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 robsyme/rustalind
[INFO] finished frobbing robsyme/rustalind
[INFO] frobbed toml for robsyme/rustalind written to work/ex/beta-1.38-1/sources/1.37.0/gh/robsyme/rustalind/Cargo.toml
[INFO] started frobbing robsyme/rustalind
[INFO] finished frobbing robsyme/rustalind
[INFO] frobbed toml for robsyme/rustalind written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robsyme/rustalind/Cargo.toml
[INFO] crate robsyme/rustalind 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] testing robsyme/rustalind 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-1/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/robsyme/rustalind:/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] e52c77a20522f2dc87bf4539af830811bd1079543f86fdcbb1f0b3763782c7bc
[INFO] running `"docker" "start" "-a" "e52c77a20522f2dc87bf4539af830811bd1079543f86fdcbb1f0b3763782c7bc"`
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling bit-set v0.5.0
[INFO] [stderr]    Compiling rustalind 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(try_from)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::TryFrom`
[INFO] [stderr]  --> src/seq/nuc.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::convert::TryFrom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `rustalind`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e52c77a20522f2dc87bf4539af830811bd1079543f86fdcbb1f0b3763782c7bc"`
[INFO] running `"docker" "rm" "-f" "e52c77a20522f2dc87bf4539af830811bd1079543f86fdcbb1f0b3763782c7bc"`
[INFO] [stdout] e52c77a20522f2dc87bf4539af830811bd1079543f86fdcbb1f0b3763782c7bc