[INFO] fetching crate oak 0.8.0...
[INFO] testing oak-0.8.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate oak 0.8.0 into /workspace/builds/worker-65/source
[INFO] validating manifest of crates.io crate oak 0.8.0 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 crates.io crate oak 0.8.0
[INFO] finished tweaking crates.io crate oak 0.8.0
[INFO] tweaked toml for crates.io crate oak 0.8.0 written to /workspace/builds/worker-65/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded oak_runtime v0.6.0
[INFO] [stderr]   Downloaded partial v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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] 3b2f1a3ebb30272c74a1a11a2d89ebb257cc17680b0edc2f69f77f3496527beb
[INFO] running `Command { std: "docker" "start" "-a" "3b2f1a3ebb30272c74a1a11a2d89ebb257cc17680b0edc2f69f77f3496527beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b2f1a3ebb30272c74a1a11a2d89ebb257cc17680b0edc2f69f77f3496527beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b2f1a3ebb30272c74a1a11a2d89ebb257cc17680b0edc2f69f77f3496527beb", kill_on_drop: false }`
[INFO] [stdout] 3b2f1a3ebb30272c74a1a11a2d89ebb257cc17680b0edc2f69f77f3496527beb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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] eafe5f11e6a86b2311bc33967a807c521a2518d98cd77fa701b4523eab2511c6
[INFO] running `Command { std: "docker" "start" "-a" "eafe5f11e6a86b2311bc33967a807c521a2518d98cd77fa701b4523eab2511c6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling partial v0.2.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling oak v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/liboak/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(proc_macro_diagnostic, proc_macro_span)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/liboak/lib.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(proc_macro_diagnostic, proc_macro_span)]
[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 `oak` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "eafe5f11e6a86b2311bc33967a807c521a2518d98cd77fa701b4523eab2511c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eafe5f11e6a86b2311bc33967a807c521a2518d98cd77fa701b4523eab2511c6", kill_on_drop: false }`
[INFO] [stdout] eafe5f11e6a86b2311bc33967a807c521a2518d98cd77fa701b4523eab2511c6