[INFO] updating cached repository zesterer/funkicrab [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/zesterer/funkicrab [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/zesterer/funkicrab" "work/ex/beta-1.38-1/sources/1.37.0/gh/zesterer/funkicrab"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/zesterer/funkicrab'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/zesterer/funkicrab" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zesterer/funkicrab"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zesterer/funkicrab'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 98528cc593478391a0ef0f91ff533592cf263914 [INFO] sha for GitHub repo zesterer/funkicrab: 98528cc593478391a0ef0f91ff533592cf263914 [INFO] validating manifest of zesterer/funkicrab 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 zesterer/funkicrab 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 zesterer/funkicrab [INFO] finished frobbing zesterer/funkicrab [INFO] frobbed toml for zesterer/funkicrab written to work/ex/beta-1.38-1/sources/1.37.0/gh/zesterer/funkicrab/Cargo.toml [INFO] started frobbing zesterer/funkicrab [INFO] finished frobbing zesterer/funkicrab [INFO] frobbed toml for zesterer/funkicrab written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zesterer/funkicrab/Cargo.toml [INFO] crate zesterer/funkicrab 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 zesterer/funkicrab 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-5/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/zesterer/funkicrab:/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] 337616afdf732fa71660769938bb4c97cf51ca7d43ec65b48f358ebd96f9c61b [INFO] running `"docker" "start" "-a" "337616afdf732fa71660769938bb4c97cf51ca7d43ec65b48f358ebd96f9c61b"` [INFO] [stderr] Compiling bimap v0.1.5 [INFO] [stderr] Compiling funkicrab v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(label_break_value)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::Error` [INFO] [stderr] --> src/exec.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use super::Error; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/hir.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `iter::FromIterator` [INFO] [stderr] --> src/llir.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | iter::FromIterator, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/llir.rs:242:20 [INFO] [stderr] | [INFO] [stderr] 242 | if (if let CellAccessInfo::Exactly(cells) = &cell_reads { [INFO] [stderr] | ____________________^ [INFO] [stderr] 243 | | cells.len() == 0 [INFO] [stderr] 244 | | } else { [INFO] [stderr] 245 | | false [INFO] [stderr] 246 | | }) { [INFO] [stderr] | |__________________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 242 | if if let CellAccessInfo::Exactly(cells) = &cell_reads { [INFO] [stderr] 243 | cells.len() == 0 [INFO] [stderr] 244 | } else { [INFO] [stderr] 245 | false [INFO] [stderr] 246 | } { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused import: `CellAccessInfo` [INFO] [stderr] --> src/opt.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | CellAccessInfo, [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/opt.rs:73:5 [INFO] [stderr] | [INFO] [stderr] 73 | prog [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` 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 `funkicrab`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "337616afdf732fa71660769938bb4c97cf51ca7d43ec65b48f358ebd96f9c61b"` [INFO] running `"docker" "rm" "-f" "337616afdf732fa71660769938bb4c97cf51ca7d43ec65b48f358ebd96f9c61b"` [INFO] [stdout] 337616afdf732fa71660769938bb4c97cf51ca7d43ec65b48f358ebd96f9c61b