[INFO] cloning repository https://github.com/slightlyoutofphase/staticvec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/slightlyoutofphase/staticvec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightlyoutofphase%2Fstaticvec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightlyoutofphase%2Fstaticvec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1daa8edc917073f8c58b572d8a67809aaf2f1af
[INFO] testing slightlyoutofphase/staticvec against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightlyoutofphase%2Fstaticvec" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slightlyoutofphase/staticvec 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/slightlyoutofphase/staticvec
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/slightlyoutofphase/staticvec
[INFO] tweaked toml for git repo https://github.com/slightlyoutofphase/staticvec written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 13d5ef1e9dc97f43c4005a567af4b409774c79688f2d074f471185775864c712
[INFO] running `Command { std: "docker" "start" "-a" "13d5ef1e9dc97f43c4005a567af4b409774c79688f2d074f471185775864c712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13d5ef1e9dc97f43c4005a567af4b409774c79688f2d074f471185775864c712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13d5ef1e9dc97f43c4005a567af4b409774c79688f2d074f471185775864c712", kill_on_drop: false }`
[INFO] [stdout] 13d5ef1e9dc97f43c4005a567af4b409774c79688f2d074f471185775864c712
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 98a0953c70c92a3e36cc5f7173378f86d20018236c8e7186d144173b89316946
[INFO] running `Command { std: "docker" "start" "-a" "98a0953c70c92a3e36cc5f7173378f86d20018236c8e7186d144173b89316946", kill_on_drop: false }`
[INFO] [stderr]    Compiling staticvec v0.11.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | / #![feature(
[INFO] [stdout] 32 | |   adt_const_params,
[INFO] [stdout] 33 | |   const_assume,
[INFO] [stdout] 34 | |   const_eval_select,
[INFO] [stdout] ...  |
[INFO] [stdout] 63 | |   untagged_unions
[INFO] [stdout] 64 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:65:30
[INFO] [stdout]    |
[INFO] [stdout] 65 | #![cfg_attr(feature = "std", feature(read_buf))]
[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 `staticvec` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "98a0953c70c92a3e36cc5f7173378f86d20018236c8e7186d144173b89316946", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98a0953c70c92a3e36cc5f7173378f86d20018236c8e7186d144173b89316946", kill_on_drop: false }`
[INFO] [stdout] 98a0953c70c92a3e36cc5f7173378f86d20018236c8e7186d144173b89316946