[INFO] cloning repository https://github.com/conradludgate/cursed-strings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/conradludgate/cursed-strings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradludgate%2Fcursed-strings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradludgate%2Fcursed-strings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d877b6063ab5acd1033672c20d276f26b53112f
[INFO] testing conradludgate/cursed-strings against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconradludgate%2Fcursed-strings" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/conradludgate/cursed-strings on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/conradludgate/cursed-strings
[INFO] finished tweaking git repo https://github.com/conradludgate/cursed-strings
[INFO] tweaked toml for git repo https://github.com/conradludgate/cursed-strings written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/conradludgate/cursed-strings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cl-generic-vec v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3f9d8ead1b1694d0fc8e934c932464c75b2fe03aec545eaa6a66e1065035082
[INFO] running `Command { std: "docker" "start" "-a" "d3f9d8ead1b1694d0fc8e934c932464c75b2fe03aec545eaa6a66e1065035082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3f9d8ead1b1694d0fc8e934c932464c75b2fe03aec545eaa6a66e1065035082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3f9d8ead1b1694d0fc8e934c932464c75b2fe03aec545eaa6a66e1065035082", kill_on_drop: false }`
[INFO] [stdout] d3f9d8ead1b1694d0fc8e934c932464c75b2fe03aec545eaa6a66e1065035082
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 509664e8dc23fe6e871f52877e9e9dac6d16ed18c9db244050767a9c1836f93b
[INFO] running `Command { std: "docker" "start" "-a" "509664e8dc23fe6e871f52877e9e9dac6d16ed18c9db244050767a9c1836f93b", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]    Compiling cl-generic-vec v0.3.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cl-generic-vec-0.3.3/src/lib.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | /     feature(
[INFO] [stdout] 5  | |         trusted_len,
[INFO] [stdout] 6  | |         min_specialization,
[INFO] [stdout] 7  | |         exact_size_is_empty,
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | |         ptr_metadata,
[INFO] [stdout] 14 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cl-generic-vec-0.3.3/src/lib.rs:16:58
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![cfg_attr(all(feature = "nightly", feature = "alloc"), feature(new_uninit))]
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cl-generic-vec` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "509664e8dc23fe6e871f52877e9e9dac6d16ed18c9db244050767a9c1836f93b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "509664e8dc23fe6e871f52877e9e9dac6d16ed18c9db244050767a9c1836f93b", kill_on_drop: false }`
[INFO] [stdout] 509664e8dc23fe6e871f52877e9e9dac6d16ed18c9db244050767a9c1836f93b