[INFO] fetching crate synco 0.0.0...
[INFO] checking synco-0.0.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate synco 0.0.0 into /workspace/builds/worker-67/source
[INFO] validating manifest of crates.io crate synco 0.0.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate synco 0.0.0
[INFO] finished tweaking crates.io crate synco 0.0.0
[INFO] tweaked toml for crates.io crate synco 0.0.0 written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] crate crates.io crate synco 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ad353a0619a9e6f83f50cd4709036b28c5ec23d55cf79e830e3025023330f2f
[INFO] running `Command { std: "docker" "start" "-a" "8ad353a0619a9e6f83f50cd4709036b28c5ec23d55cf79e830e3025023330f2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ad353a0619a9e6f83f50cd4709036b28c5ec23d55cf79e830e3025023330f2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ad353a0619a9e6f83f50cd4709036b28c5ec23d55cf79e830e3025023330f2f", kill_on_drop: false }`
[INFO] [stdout] 8ad353a0619a9e6f83f50cd4709036b28c5ec23d55cf79e830e3025023330f2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36926f5f5c30617706ad78bc8b76c041b923cff39c77f8741d65f167a0420c12
[INFO] running `Command { std: "docker" "start" "-a" "36926f5f5c30617706ad78bc8b76c041b923cff39c77f8741d65f167a0420c12", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking mopa v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking atom v0.3.6
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking bitflags v1.3.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]     Checking tuple_utils v0.3.0
[INFO] [stderr]     Checking shrev v1.1.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking synco v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     min_type_alias_impl_trait,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of full type_alias_impl_trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / #![feature(
[INFO] [stdout] 2 | |     generic_associated_types,
[INFO] [stdout] 3 | |     maybe_uninit_ref,
[INFO] [stdout] 4 | |     maybe_uninit_extra,
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     fn_traits,
[INFO] [stdout] 9 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in type aliases is unstable
[INFO] [stdout]    --> src/entity.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub type EntityIter<'a> = impl Iterator<Item = Entity> + 'a;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in type aliases is unstable
[INFO] [stdout]   --> src/system.rs:93:28
[INFO] [stdout]    |
[INFO] [stdout] 93 |     type System = FnSystem<impl FnOnce(Args) -> O, Args, O>;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/entity.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> src/query.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 |     cell::{UnsafeCell, Ref},
[INFO] [stdout]   |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/query.rs:156:20
[INFO] [stdout]     |
[INFO] [stdout] 156 |                 };);*
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/query.rs:156:20
[INFO] [stdout]     |
[INFO] [stdout] 156 |                 };);*
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stdout] error: aborting due to 4 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `synco` due to 5 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "36926f5f5c30617706ad78bc8b76c041b923cff39c77f8741d65f167a0420c12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36926f5f5c30617706ad78bc8b76c041b923cff39c77f8741d65f167a0420c12", kill_on_drop: false }`
[INFO] [stdout] 36926f5f5c30617706ad78bc8b76c041b923cff39c77f8741d65f167a0420c12
