[INFO] cloning repository https://github.com/nasen23/compiler-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nasen23/compiler-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnasen23%2Fcompiler-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnasen23%2Fcompiler-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc17b16f1100815494eaf875d815ca188d8738ea
[INFO] testing nasen23/compiler-lab against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnasen23%2Fcompiler-lab" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nasen23/compiler-lab on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nasen23/compiler-lab
[INFO] finished tweaking git repo https://github.com/nasen23/compiler-lab
[INFO] tweaked toml for git repo https://github.com/nasen23/compiler-lab written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/nasen23/compiler-lab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-1/source/llvmgen/Cargo.toml: unused manifest key: dependencies.failure.feature
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redfa v0.0.2
[INFO] [stderr]   Downloaded lalr v0.0.2
[INFO] [stderr]   Downloaded plex v0.2.5
[INFO] [stderr]   Downloaded llvm-sys v90.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", 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] 55000220897e4d0b737babf59dc8805620c1cc97057f4a76a733cabcdda03c9f
[INFO] running `Command { std: "docker" "start" "-a" "55000220897e4d0b737babf59dc8805620c1cc97057f4a76a733cabcdda03c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55000220897e4d0b737babf59dc8805620c1cc97057f4a76a733cabcdda03c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55000220897e4d0b737babf59dc8805620c1cc97057f4a76a733cabcdda03c9f", kill_on_drop: false }`
[INFO] [stdout] 55000220897e4d0b737babf59dc8805620c1cc97057f4a76a733cabcdda03c9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e4fdd03735acc0ea425d5c4a79c9d85dda86b7ed04420e5b72ae5eead3c0446
[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" "9e4fdd03735acc0ea425d5c4a79c9d85dda86b7ed04420e5b72ae5eead3c0446", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/llvmgen/Cargo.toml: unused manifest key: dependencies.failure.feature
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling lalr v0.0.2
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling llvm-sys v90.0.0
[INFO] [stderr]    Compiling redfa v0.0.2
[INFO] [stderr]    Compiling plex v0.2.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/plex-0.2.5/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/plex-0.2.5/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(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 `plex` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9e4fdd03735acc0ea425d5c4a79c9d85dda86b7ed04420e5b72ae5eead3c0446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e4fdd03735acc0ea425d5c4a79c9d85dda86b7ed04420e5b72ae5eead3c0446", kill_on_drop: false }`
[INFO] [stdout] 9e4fdd03735acc0ea425d5c4a79c9d85dda86b7ed04420e5b72ae5eead3c0446