[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] 2d0634b1cd5b87e50afb8e5f2d077fd53e6d4231
[INFO] testing slightlyoutofphase/staticvec against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightlyoutofphase%2Fstaticvec" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slightlyoutofphase/staticvec on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cool_asserts v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed83e955e9ad44bcc0b3e78dd445e2a85b0ada801d6f7d247ad3bb9cf3e9c78b
[INFO] running `Command { std: "docker" "start" "-a" "ed83e955e9ad44bcc0b3e78dd445e2a85b0ada801d6f7d247ad3bb9cf3e9c78b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed83e955e9ad44bcc0b3e78dd445e2a85b0ada801d6f7d247ad3bb9cf3e9c78b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed83e955e9ad44bcc0b3e78dd445e2a85b0ada801d6f7d247ad3bb9cf3e9c78b", kill_on_drop: false }`
[INFO] [stdout] ed83e955e9ad44bcc0b3e78dd445e2a85b0ada801d6f7d247ad3bb9cf3e9c78b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11da5690782aa5351f1206650cbf4a8eb5e125950cbb1ae3ff642605c7cd67ac
[INFO] running `Command { std: "docker" "start" "-a" "11da5690782aa5351f1206650cbf4a8eb5e125950cbb1ae3ff642605c7cd67ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling staticvec v0.10.8 (/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 | |   const_assume,
[INFO] [stdout] 33 | |   const_evaluatable_checked,
[INFO] [stdout] 34 | |   const_fn_floating_point_arithmetic,
[INFO] [stdout] ...  |
[INFO] [stdout] 69 | |   untagged_unions
[INFO] [stdout] 70 | | )]
[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:71:30
[INFO] [stdout]    |
[INFO] [stdout] 71 | #![cfg_attr(feature = "std", feature(read_initializer))]
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'maybe_uninit_ref'
[INFO] [stdout]    --> src/lib.rs:234:42
[INFO] [stdout]     |
[INFO] [stdout] 234 |             ptr::drop_in_place(forgotten.assume_init_mut().get_unchecked_mut(N2.min(N)..N2));
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63568 <https://github.com/rust-lang/rust/issues/63568> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'maybe_uninit_ref'
[INFO] [stdout]     --> src/lib.rs:1877:14
[INFO] [stdout]      |
[INFO] [stdout] 1877 |             .assume_init_mut()
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #63568 <https://github.com/rust-lang/rust/issues/63568> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'maybe_uninit_ref'
[INFO] [stdout]    --> src/trait_impls.rs:220:12
[INFO] [stdout]     |
[INFO] [stdout] 220 |           .assume_init_mut()
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63568 <https://github.com/rust-lang/rust/issues/63568> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'maybe_uninit_ref'
[INFO] [stdout]    --> src/trait_impls.rs:240:16
[INFO] [stdout]     |
[INFO] [stdout] 240 |               .assume_init_mut()
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63568 <https://github.com/rust-lang/rust/issues/63568> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `staticvec`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "11da5690782aa5351f1206650cbf4a8eb5e125950cbb1ae3ff642605c7cd67ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11da5690782aa5351f1206650cbf4a8eb5e125950cbb1ae3ff642605c7cd67ac", kill_on_drop: false }`
[INFO] [stdout] 11da5690782aa5351f1206650cbf4a8eb5e125950cbb1ae3ff642605c7cd67ac
