[INFO] fetching crate ptr 0.2.3...
[INFO] testing ptr-0.2.3 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate ptr 0.2.3 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate ptr 0.2.3 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ptr 0.2.3
[INFO] finished tweaking crates.io crate ptr 0.2.3
[INFO] tweaked toml for crates.io crate ptr 0.2.3 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1490b3ec9d4f8ef4d5df45a15c6ea6dc20f78506d8ad1a5272203d80651d0635
[INFO] running `Command { std: "docker" "start" "-a" "1490b3ec9d4f8ef4d5df45a15c6ea6dc20f78506d8ad1a5272203d80651d0635", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1490b3ec9d4f8ef4d5df45a15c6ea6dc20f78506d8ad1a5272203d80651d0635", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1490b3ec9d4f8ef4d5df45a15c6ea6dc20f78506d8ad1a5272203d80651d0635", kill_on_drop: false }`
[INFO] [stdout] 1490b3ec9d4f8ef4d5df45a15c6ea6dc20f78506d8ad1a5272203d80651d0635
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 042321716d90fc689dd5a6cae442d6da36c8467efdebbd0327bb2dbf89f3c6f4
[INFO] running `Command { std: "docker" "start" "-a" "042321716d90fc689dd5a6cae442d6da36c8467efdebbd0327bb2dbf89f3c6f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling ptr v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(coerce_unsized)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(unsize)]
[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 `ptr` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "042321716d90fc689dd5a6cae442d6da36c8467efdebbd0327bb2dbf89f3c6f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "042321716d90fc689dd5a6cae442d6da36c8467efdebbd0327bb2dbf89f3c6f4", kill_on_drop: false }`
[INFO] [stdout] 042321716d90fc689dd5a6cae442d6da36c8467efdebbd0327bb2dbf89f3c6f4
