[INFO] cloning repository https://github.com/rendaardy/green_threads
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rendaardy/green_threads" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frendaardy%2Fgreen_threads", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frendaardy%2Fgreen_threads'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 760a7103fbf5d5539387db722face2eb1d29b79a
[INFO] testing rendaardy/green_threads against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frendaardy%2Fgreen_threads" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rendaardy/green_threads 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 git repo https://github.com/rendaardy/green_threads
[INFO] finished tweaking git repo https://github.com/rendaardy/green_threads
[INFO] tweaked toml for git repo https://github.com/rendaardy/green_threads written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/rendaardy/green_threads already has a lockfile, it will not be regenerated
[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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 2a47140224af574d0e021bc2ae42c00b27f615501710fdb639c20ac07c4d3ca3
[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" "2a47140224af574d0e021bc2ae42c00b27f615501710fdb639c20ac07c4d3ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a47140224af574d0e021bc2ae42c00b27f615501710fdb639c20ac07c4d3ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a47140224af574d0e021bc2ae42c00b27f615501710fdb639c20ac07c4d3ca3", kill_on_drop: false }`
[INFO] [stdout] 2a47140224af574d0e021bc2ae42c00b27f615501710fdb639c20ac07c4d3ca3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 1fb725a5bef49eaf151c54bf6b56b4d0d3bd55e63faa59f3b9575fc6f058a5a6
[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" "1fb725a5bef49eaf151c54bf6b56b4d0d3bd55e63faa59f3b9575fc6f058a5a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling green_threads v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(llvm_asm, naked_functions)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust ABI is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn skip() {}
[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] warning: naked functions must contain a single asm block
[INFO] [stdout]    --> src/main.rs:116:1
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn skip() {}
[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] warning: Rust ABI is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:164:11
[INFO] [stdout]     |
[INFO] [stdout] 164 | unsafe fn switch(old: *const ThreadContext, new: *const ThreadContext) {
[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: referencing function parameters is not allowed in naked functions
[INFO] [stdout]    --> src/main.rs:184:11
[INFO] [stdout]     |
[INFO] [stdout] 184 |     : "r"(old), "r"(new)
[INFO] [stdout]     |           ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: follow the calling convention in asm block to use parameters
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: referencing function parameters is not allowed in naked functions
[INFO] [stdout]    --> src/main.rs:184:21
[INFO] [stdout]     |
[INFO] [stdout] 184 |     : "r"(old), "r"(new)
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: follow the calling convention in asm block to use parameters
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the LLVM-style inline assembly is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:165:5
[INFO] [stdout]     |
[INFO] [stdout] 165 | /     llvm_asm!("
[INFO] [stdout] 166 | |         mov %rsp, 0x00($0)
[INFO] [stdout] 167 | |         mov %r15, 0x08($0)
[INFO] [stdout] 168 | |         mov %r14, 0x10($0)
[INFO] [stdout] ...   |
[INFO] [stdout] 186 | |     : "alignstack", "volatile"
[INFO] [stdout] 187 | |     );
[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]     = help: use the new asm! syntax specified in RFC 2873
[INFO] [stdout]     = note: this warning originates in the macro `llvm_asm` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 4 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 `green_threads` due to 4 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1fb725a5bef49eaf151c54bf6b56b4d0d3bd55e63faa59f3b9575fc6f058a5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fb725a5bef49eaf151c54bf6b56b4d0d3bd55e63faa59f3b9575fc6f058a5a6", kill_on_drop: false }`
[INFO] [stdout] 1fb725a5bef49eaf151c54bf6b56b4d0d3bd55e63faa59f3b9575fc6f058a5a6
