[INFO] updating cached repository Systemcluster/bracket2-rs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/Systemcluster/bracket2-rs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/Systemcluster/bracket2-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Systemcluster/bracket2-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Systemcluster/bracket2-rs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Systemcluster/bracket2-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Systemcluster/bracket2-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Systemcluster/bracket2-rs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 52538166672b9b31fda33a3ad0abd3fc1cac9a62 [INFO] sha for GitHub repo Systemcluster/bracket2-rs: 52538166672b9b31fda33a3ad0abd3fc1cac9a62 [INFO] validating manifest of Systemcluster/bracket2-rs 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 Systemcluster/bracket2-rs 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 Systemcluster/bracket2-rs [INFO] finished frobbing Systemcluster/bracket2-rs [INFO] frobbed toml for Systemcluster/bracket2-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Systemcluster/bracket2-rs/Cargo.toml [INFO] started frobbing Systemcluster/bracket2-rs [INFO] finished frobbing Systemcluster/bracket2-rs [INFO] frobbed toml for Systemcluster/bracket2-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Systemcluster/bracket2-rs/Cargo.toml [INFO] crate Systemcluster/bracket2-rs 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 Systemcluster/bracket2-rs 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Systemcluster/bracket2-rs:/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] 1b37d4bda190644b53fa2fa8cc76e09a73ab2ad1ea3b39aa718957c266806566 [INFO] running `"docker" "start" "-a" "1b37d4bda190644b53fa2fa8cc76e09a73ab2ad1ea3b39aa718957c266806566"` [INFO] [stderr] Compiling time v0.1.39 [INFO] [stderr] Compiling regex v0.2.5 [INFO] [stderr] Compiling simplelog v0.4.4 [INFO] [stderr] Compiling bracket2 v0.0.1-dev (/opt/crater/workdir) [INFO] [stderr] warning: the feature `const_generics` is incomplete and may cause the compiler to crash [INFO] [stderr] --> src/main.rs:18:12 [INFO] [stderr] | [INFO] [stderr] 18 | #![feature(const_generics)] // const generics [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:4:1 [INFO] [stderr] | [INFO] [stderr] 4 | #![feature(inclusive_range_syntax)] // range syntax additions [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:5:1 [INFO] [stderr] | [INFO] [stderr] 5 | #![feature(target_feature, cfg_target_feature)] // target feature branching [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:6:1 [INFO] [stderr] | [INFO] [stderr] 6 | #![feature(match_default_bindings, match_beginning_vert)] // simplify matching [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:7:1 [INFO] [stderr] | [INFO] [stderr] 7 | #![feature(underscore_lifetimes, in_band_lifetimes, nll, nested_method_call)] // simplify lifetimes [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:8:1 [INFO] [stderr] | [INFO] [stderr] 8 | #![feature(universal_impl_trait, conservative_impl_trait, dyn_trait)] // impl trait [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:9:1 [INFO] [stderr] | [INFO] [stderr] 9 | #![feature(copy_closures, clone_closures)] // closures enhancement [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:10:1 [INFO] [stderr] | [INFO] [stderr] 10 | #![feature(try_trait, termination_trait, catch_expr)] // error handling [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:11:1 [INFO] [stderr] | [INFO] [stderr] 11 | #![feature(use_nested_groups, crate_in_paths, crate_visibility_modifier, non_modrs_mods)] // module handling [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:12:1 [INFO] [stderr] | [INFO] [stderr] 12 | #![feature(decl_macro, proc_macro)] // macro improvements [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:13:1 [INFO] [stderr] | [INFO] [stderr] 13 | #![feature(arbitrary_self_types)] // additional self method arguments [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:14:1 [INFO] [stderr] | [INFO] [stderr] 14 | #![feature(generators, generator_trait)] // generators/coroutines [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:15:1 [INFO] [stderr] | [INFO] [stderr] 15 | #![feature(fn_traits, unboxed_closures)] // function-like type traits [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:16:1 [INFO] [stderr] | [INFO] [stderr] 16 | #![feature(never_type)] // new types [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:17:1 [INFO] [stderr] | [INFO] [stderr] 17 | #![feature(const_fn)] // const functions [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [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(const_generics)] // const generics [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to 15 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `bracket2`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "1b37d4bda190644b53fa2fa8cc76e09a73ab2ad1ea3b39aa718957c266806566"` [INFO] running `"docker" "rm" "-f" "1b37d4bda190644b53fa2fa8cc76e09a73ab2ad1ea3b39aa718957c266806566"` [INFO] [stdout] 1b37d4bda190644b53fa2fa8cc76e09a73ab2ad1ea3b39aa718957c266806566