[INFO] cloning repository https://github.com/wyhhh/md_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wyhhh/md_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyhhh%2Fmd_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyhhh%2Fmd_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7685828dad6314e2e5e8986a4ae592d7a62e6c5e
[INFO] testing wyhhh/md_engine against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyhhh%2Fmd_engine" "/workspace/builds/worker-90/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-90/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wyhhh/md_engine on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wyhhh/md_engine
[INFO] finished tweaking git repo https://github.com/wyhhh/md_engine
[INFO] tweaked toml for git repo https://github.com/wyhhh/md_engine written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] crate git repo https://github.com/wyhhh/md_engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d66b2f7a9124f4375e6efae233a9365a33670d5730400a9f54b9a2cb7f807aa5
[INFO] running `Command { std: "docker" "start" "-a" "d66b2f7a9124f4375e6efae233a9365a33670d5730400a9f54b9a2cb7f807aa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d66b2f7a9124f4375e6efae233a9365a33670d5730400a9f54b9a2cb7f807aa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d66b2f7a9124f4375e6efae233a9365a33670d5730400a9f54b9a2cb7f807aa5", kill_on_drop: false }`
[INFO] [stdout] d66b2f7a9124f4375e6efae233a9365a33670d5730400a9f54b9a2cb7f807aa5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bdb81997c3621b38579599fe355d8886541ddd8e05426851cb8844058c83416
[INFO] running `Command { std: "docker" "start" "-a" "1bdb81997c3621b38579599fe355d8886541ddd8e05426851cb8844058c83416", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling chr v0.1.0 (/opt/rustwide/workdir/chr)
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling enum_len v0.1.0 (/opt/rustwide/workdir/enum_len)
[INFO] [stderr]    Compiling md_engine v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trace_macros)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `md_engine` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1bdb81997c3621b38579599fe355d8886541ddd8e05426851cb8844058c83416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bdb81997c3621b38579599fe355d8886541ddd8e05426851cb8844058c83416", kill_on_drop: false }`
[INFO] [stdout] 1bdb81997c3621b38579599fe355d8886541ddd8e05426851cb8844058c83416