[INFO] updating cached repository sifton/gbers [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/sifton/gbers [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/sifton/gbers" "work/ex/beta-1.38-1/sources/1.37.0/gh/sifton/gbers"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sifton/gbers'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/sifton/gbers" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sifton/gbers"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sifton/gbers'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 3a94b798299f625a7e94cb8cae3cb2f114735d7b [INFO] sha for GitHub repo sifton/gbers: 3a94b798299f625a7e94cb8cae3cb2f114735d7b [INFO] validating manifest of sifton/gbers 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 sifton/gbers 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 sifton/gbers [INFO] finished frobbing sifton/gbers [INFO] frobbed toml for sifton/gbers written to work/ex/beta-1.38-1/sources/1.37.0/gh/sifton/gbers/Cargo.toml [INFO] started frobbing sifton/gbers [INFO] finished frobbing sifton/gbers [INFO] frobbed toml for sifton/gbers written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sifton/gbers/Cargo.toml [INFO] crate sifton/gbers 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 sifton/gbers against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sifton/gbers:/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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] dfa6f2d83e6de3d4f28a5f304d5aa1ea3f1e995b1b04d88b99bfab9111b98a5b [INFO] running `"docker" "start" "-a" "dfa6f2d83e6de3d4f28a5f304d5aa1ea3f1e995b1b04d88b99bfab9111b98a5b"` [INFO] [stderr] Compiling byte-slice-cast v0.1.0 [INFO] [stderr] Compiling gbers v0.0.1 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:18:1 [INFO] [stderr] | [INFO] [stderr] 18 | #![feature(try_from)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::marker::PhantomData` [INFO] [stderr] --> src/hw/cart.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | use std::marker::PhantomData; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `TryInto` [INFO] [stderr] --> src/hw/cpu/instr.rs:28:35 [INFO] [stderr] | [INFO] [stderr] 28 | use std::convert::{Into, TryFrom, TryInto}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::cart` [INFO] [stderr] --> src/hw/cpu/mod.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | use super::cart; [INFO] [stderr] | ^^^^^^^^^^^ [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 `gbers`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "dfa6f2d83e6de3d4f28a5f304d5aa1ea3f1e995b1b04d88b99bfab9111b98a5b"` [INFO] running `"docker" "rm" "-f" "dfa6f2d83e6de3d4f28a5f304d5aa1ea3f1e995b1b04d88b99bfab9111b98a5b"` [INFO] [stdout] dfa6f2d83e6de3d4f28a5f304d5aa1ea3f1e995b1b04d88b99bfab9111b98a5b