[INFO] cloning repository https://github.com/neri/uefi-rs-hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/neri/uefi-rs-hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneri%2Fuefi-rs-hello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneri%2Fuefi-rs-hello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa4923782053c29d7167c7741d55a08bbcaa1e07
[INFO] testing neri/uefi-rs-hello against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneri%2Fuefi-rs-hello" "/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/neri/uefi-rs-hello on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/neri/uefi-rs-hello
[INFO] finished tweaking git repo https://github.com/neri/uefi-rs-hello
[INFO] tweaked toml for git repo https://github.com/neri/uefi-rs-hello written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/neri/uefi-rs-hello already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8730e9eaf9f00c9b3c191ed9878020392492c9cb72e1545d300cc372777516a7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8730e9eaf9f00c9b3c191ed9878020392492c9cb72e1545d300cc372777516a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8730e9eaf9f00c9b3c191ed9878020392492c9cb72e1545d300cc372777516a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8730e9eaf9f00c9b3c191ed9878020392492c9cb72e1545d300cc372777516a7", kill_on_drop: false }`
[INFO] [stdout] 8730e9eaf9f00c9b3c191ed9878020392492c9cb72e1545d300cc372777516a7
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a28a45f7b8519f4df2293cd4bb1516fedc8cd786330b8f1e1824b1dd03884be1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a28a45f7b8519f4df2293cd4bb1516fedc8cd786330b8f1e1824b1dd03884be1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling ucs2 v0.3.2
[INFO] [stderr]    Compiling uefi-macros v0.3.3
[INFO] [stderr]    Compiling uefi v0.7.0 (https://github.com/rust-osdev/uefi-rs.git#1d89f9f7)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/uefi-rs-f0a06b7c1e31b7b0/1d89f9f/src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #![feature(auto_traits)]
[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/git/checkouts/uefi-rs-f0a06b7c1e31b7b0/1d89f9f/src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![feature(try_trait)]
[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/git/checkouts/uefi-rs-f0a06b7c1e31b7b0/1d89f9f/src/lib.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | #![feature(abi_efiapi)]
[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/git/checkouts/uefi-rs-f0a06b7c1e31b7b0/1d89f9f/src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | #![feature(negative_impls)]
[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/git/checkouts/uefi-rs-f0a06b7c1e31b7b0/1d89f9f/src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![feature(const_fn)]
[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/git/checkouts/uefi-rs-f0a06b7c1e31b7b0/1d89f9f/src/lib.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![feature(const_panic)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 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 `uefi`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "a28a45f7b8519f4df2293cd4bb1516fedc8cd786330b8f1e1824b1dd03884be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a28a45f7b8519f4df2293cd4bb1516fedc8cd786330b8f1e1824b1dd03884be1", kill_on_drop: false }`
[INFO] [stdout] a28a45f7b8519f4df2293cd4bb1516fedc8cd786330b8f1e1824b1dd03884be1