[INFO] fetching crate yarpl 0.0.23...
[INFO] testing yarpl-0.0.23 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate yarpl 0.0.23 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate yarpl 0.0.23 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yarpl 0.0.23
[INFO] finished tweaking crates.io crate yarpl 0.0.23
[INFO] tweaked toml for crates.io crate yarpl 0.0.23 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1b01b663f6a03ff25f79465f58d6f2ac067bdbc14e5ce84dd0b855b738916fe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d1b01b663f6a03ff25f79465f58d6f2ac067bdbc14e5ce84dd0b855b738916fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1b01b663f6a03ff25f79465f58d6f2ac067bdbc14e5ce84dd0b855b738916fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1b01b663f6a03ff25f79465f58d6f2ac067bdbc14e5ce84dd0b855b738916fe", kill_on_drop: false }`
[INFO] [stdout] d1b01b663f6a03ff25f79465f58d6f2ac067bdbc14e5ce84dd0b855b738916fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d36877ac8a222dde9a5aba5784d4b47ffe89a0b73575d19c869aaa1309feb13
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0d36877ac8a222dde9a5aba5784d4b47ffe89a0b73575d19c869aaa1309feb13", kill_on_drop: false }`
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling yarpl v0.0.23 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(const_generics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![feature(adt_const_params]` and `#![feature(generic_const_exprs)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(extended_key_value_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `extended_key_value_attributes` has been stable since 1.54.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(iter_advance_by)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `&'static str` is forbidden as the type of a const generic parameter
[INFO] [stdout]   --> src/either.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<const STRING: &'static str> Parse for Either<STRING> {
[INFO] [stdout]    |                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `&'static str` is forbidden as the type of a const generic parameter
[INFO] [stdout]   --> src/literal.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<const LITERAL: &'static str> Parse for Literal<LITERAL> {
[INFO] [stdout]    |                     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `&'static str` is forbidden as the type of a const generic parameter
[INFO] [stdout]  --> src/either.rs:9:33
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Either<const STRING: &'static str>;
[INFO] [stdout]   |                                 ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `&'static str` is forbidden as the type of a const generic parameter
[INFO] [stdout]  --> src/literal.rs:9:35
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Literal<const LITERAL: &'static str>;
[INFO] [stdout]   |                                   ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yarpl` due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "0d36877ac8a222dde9a5aba5784d4b47ffe89a0b73575d19c869aaa1309feb13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d36877ac8a222dde9a5aba5784d4b47ffe89a0b73575d19c869aaa1309feb13", kill_on_drop: false }`
[INFO] [stdout] 0d36877ac8a222dde9a5aba5784d4b47ffe89a0b73575d19c869aaa1309feb13