[INFO] cloning repository https://github.com/PMFU/PMFUMetaServer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PMFU/PMFUMetaServer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPMFU%2FPMFUMetaServer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPMFU%2FPMFUMetaServer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 371a3ee899c329e77d7a131b0b2c6fbedd713a42
[INFO] testing PMFU/PMFUMetaServer 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%2FPMFU%2FPMFUMetaServer" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PMFU/PMFUMetaServer 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/PMFU/PMFUMetaServer
[INFO] finished tweaking git repo https://github.com/PMFU/PMFUMetaServer
[INFO] tweaked toml for git repo https://github.com/PMFU/PMFUMetaServer written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/PMFU/PMFUMetaServer 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]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-utils v0.1.2
[INFO] [stderr]   Downloaded bindgen v0.35.0
[INFO] [stderr]   Downloaded enet-sys v0.2.3
[INFO] [stderr]   Downloaded enet v0.2.3
[INFO] [stderr]   Downloaded enum-utils-from-str v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 0df6f7c25740459d6714967ce36498f5d1f4f498f4c20874a9d63cb5da313a69
[INFO] running `Command { std: "docker" "start" "-a" "0df6f7c25740459d6714967ce36498f5d1f4f498f4c20874a9d63cb5da313a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0df6f7c25740459d6714967ce36498f5d1f4f498f4c20874a9d63cb5da313a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0df6f7c25740459d6714967ce36498f5d1f4f498f4c20874a9d63cb5da313a69", kill_on_drop: false }`
[INFO] [stdout] 0df6f7c25740459d6714967ce36498f5d1f4f498f4c20874a9d63cb5da313a69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 9ed6fa8b7f4c63ee1a1ac798284bc5bd7bc99e685b733534b1e3e08ccc07602e
[INFO] running `Command { std: "docker" "start" "-a" "9ed6fa8b7f4c63ee1a1ac798284bc5bd7bc99e685b733534b1e3e08ccc07602e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling bindgen v0.35.0
[INFO] [stderr]    Compiling wildmatch v1.1.0
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling clang-sys v0.22.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling xmltree v0.10.3
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling enum-utils-from-str v0.1.2
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling attohttpc v0.16.3
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr]    Compiling igd v0.12.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive_internals v0.25.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling enum-utils v0.1.2
[INFO] [stderr]    Compiling enet-sys v0.2.3
[INFO] [stderr]    Compiling enet v0.2.3
[INFO] [stderr]    Compiling pmfumeta_server 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(inherent_ascii_escape)]
[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 `pmfumeta_server` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9ed6fa8b7f4c63ee1a1ac798284bc5bd7bc99e685b733534b1e3e08ccc07602e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ed6fa8b7f4c63ee1a1ac798284bc5bd7bc99e685b733534b1e3e08ccc07602e", kill_on_drop: false }`
[INFO] [stdout] 9ed6fa8b7f4c63ee1a1ac798284bc5bd7bc99e685b733534b1e3e08ccc07602e