[INFO] fetching crate hexstring 0.1.2...
[INFO] testing hexstring-0.1.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate hexstring 0.1.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate hexstring 0.1.2 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hexstring 0.1.2
[INFO] finished tweaking crates.io crate hexstring 0.1.2
[INFO] tweaked toml for crates.io crate hexstring 0.1.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8dfef9a962d4887716a225341fc9c5cb8cc02020923a7bde49bc7da46029a90
[INFO] running `Command { std: "docker" "start" "-a" "c8dfef9a962d4887716a225341fc9c5cb8cc02020923a7bde49bc7da46029a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8dfef9a962d4887716a225341fc9c5cb8cc02020923a7bde49bc7da46029a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8dfef9a962d4887716a225341fc9c5cb8cc02020923a7bde49bc7da46029a90", kill_on_drop: false }`
[INFO] [stdout] c8dfef9a962d4887716a225341fc9c5cb8cc02020923a7bde49bc7da46029a90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e8f385329893677b98ce4676958f060aeaa61cf09a2b38dd3c29c9baf7b4ec0
[INFO] running `Command { std: "docker" "start" "-a" "4e8f385329893677b98ce4676958f060aeaa61cf09a2b38dd3c29c9baf7b4ec0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling hexstring v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![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: `Case` is forbidden as the type of a const generic parameter
[INFO] [stdout]    --> src/lib.rs:105:15
[INFO] [stdout]     |
[INFO] [stdout] 105 | impl<const C: Case> HexString<C> {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Case` is forbidden as the type of a const generic parameter
[INFO] [stdout]    --> src/lib.rs:170:15
[INFO] [stdout]     |
[INFO] [stdout] 170 | impl<const C: Case> From<&[u8]> for HexString<C> {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Case` is forbidden as the type of a const generic parameter
[INFO] [stdout]    --> src/lib.rs:181:15
[INFO] [stdout]     |
[INFO] [stdout] 181 | impl<const C: Case> From<Vec<u8>> for HexString<C> {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Case` is forbidden as the type of a const generic parameter
[INFO] [stdout]    --> src/lib.rs:187:15
[INFO] [stdout]     |
[INFO] [stdout] 187 | impl<const C: Case, const N: usize> From<[u8; N]> for HexString<C> {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Case` is forbidden as the type of a const generic parameter
[INFO] [stdout]    --> src/lib.rs:193:15
[INFO] [stdout]     |
[INFO] [stdout] 193 | impl<const C: Case> From<HexString<C>> for Vec<u8> {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Case` is forbidden as the type of a const generic parameter
[INFO] [stdout]    --> src/lib.rs:203:15
[INFO] [stdout]     |
[INFO] [stdout] 203 | impl<const C: Case, const N: usize> TryFrom<HexString<C>> for [u8; N] {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the only supported types are integers, `bool` and `char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `Case` is forbidden as the type of a const generic parameter
[INFO] [stdout]   --> src/lib.rs:97:31
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub struct HexString<const C: Case>(Cow<'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] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hexstring` due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "4e8f385329893677b98ce4676958f060aeaa61cf09a2b38dd3c29c9baf7b4ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e8f385329893677b98ce4676958f060aeaa61cf09a2b38dd3c29c9baf7b4ec0", kill_on_drop: false }`
[INFO] [stdout] 4e8f385329893677b98ce4676958f060aeaa61cf09a2b38dd3c29c9baf7b4ec0