[INFO] fetching crate frenetic 0.1.0...
[INFO] testing frenetic-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate frenetic 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate frenetic 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frenetic 0.1.0
[INFO] finished tweaking crates.io crate frenetic 0.1.0
[INFO] tweaked toml for crates.io crate frenetic 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5a9d2b9d8c289852dcbd550213719e40e85206fa6090e694476db3f9f6240d3
[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" "c5a9d2b9d8c289852dcbd550213719e40e85206fa6090e694476db3f9f6240d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5a9d2b9d8c289852dcbd550213719e40e85206fa6090e694476db3f9f6240d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5a9d2b9d8c289852dcbd550213719e40e85206fa6090e694476db3f9f6240d3", kill_on_drop: false }`
[INFO] [stdout] c5a9d2b9d8c289852dcbd550213719e40e85206fa6090e694476db3f9f6240d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2d7c06282e1cdf89e28fe4614de086d786f07f27ebf52d6c24f0bdffd519bfe5
[INFO] running `Command { std: "docker" "start" "-a" "2d7c06282e1cdf89e28fe4614de086d786f07f27ebf52d6c24f0bdffd519bfe5", kill_on_drop: false }`
[INFO] [stderr]    Compiling frenetic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(naked_functions)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: referencing function parameters is not allowed in naked functions
[INFO] [stdout]   --> src/arch/x86_64/sysv.rs:47:27
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 in("rdi") self,
[INFO] [stdout]    |                           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: follow the calling convention in asm block to use parameters
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: only `const` and `sym` operands are supported in naked functions
[INFO] [stdout]   --> src/arch/x86_64/sysv.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 in("rdi") self,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unsupported_naked_functions)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: referencing function parameters is not allowed in naked functions
[INFO] [stdout]   --> src/arch/x86_64/sysv.rs:66:23
[INFO] [stdout]    |
[INFO] [stdout] 66 |             in("rdi") self,
[INFO] [stdout]    |                       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: follow the calling convention in asm block to use parameters
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: only `const` and `sym` operands are supported in naked functions
[INFO] [stdout]   --> src/arch/x86_64/sysv.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             in("rdi") self,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frenetic`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2d7c06282e1cdf89e28fe4614de086d786f07f27ebf52d6c24f0bdffd519bfe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d7c06282e1cdf89e28fe4614de086d786f07f27ebf52d6c24f0bdffd519bfe5", kill_on_drop: false }`
[INFO] [stdout] 2d7c06282e1cdf89e28fe4614de086d786f07f27ebf52d6c24f0bdffd519bfe5