[INFO] fetching crate hexstring 0.1.2...
[INFO] testing hexstring-0.1.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate hexstring 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate hexstring 0.1.2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hex v0.4.3
[INFO] [stderr]   Downloaded derive_more v0.99.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d84f641d74ad443a195e2c17e2bbb0c239a4a75c406770ac89bcf043d71e78d7
[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" "d84f641d74ad443a195e2c17e2bbb0c239a4a75c406770ac89bcf043d71e78d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d84f641d74ad443a195e2c17e2bbb0c239a4a75c406770ac89bcf043d71e78d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d84f641d74ad443a195e2c17e2bbb0c239a4a75c406770ac89bcf043d71e78d7", kill_on_drop: false }`
[INFO] [stdout] d84f641d74ad443a195e2c17e2bbb0c239a4a75c406770ac89bcf043d71e78d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 254a83e76787b79bbd8670af028cb0b12f50a6f953f3b5263d4eeac09ada013f
[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" "254a83e76787b79bbd8670af028cb0b12f50a6f953f3b5263d4eeac09ada013f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling derive_more v0.99.16
[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]     = help: more complex types are supported with `#![feature(adt_const_params)]`
[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]     = help: more complex types are supported with `#![feature(adt_const_params)]`
[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]     = help: more complex types are supported with `#![feature(adt_const_params)]`
[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]     = help: more complex types are supported with `#![feature(adt_const_params)]`
[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]     = help: more complex types are supported with `#![feature(adt_const_params)]`
[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]     = help: more complex types are supported with `#![feature(adt_const_params)]`
[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]    = help: more complex types are supported with `#![feature(adt_const_params)]`
[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" "254a83e76787b79bbd8670af028cb0b12f50a6f953f3b5263d4eeac09ada013f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254a83e76787b79bbd8670af028cb0b12f50a6f953f3b5263d4eeac09ada013f", kill_on_drop: false }`
[INFO] [stdout] 254a83e76787b79bbd8670af028cb0b12f50a6f953f3b5263d4eeac09ada013f