[INFO] cloning repository https://github.com/Cobrand/tcp_minigame
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cobrand/tcp_minigame" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCobrand%2Ftcp_minigame", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCobrand%2Ftcp_minigame'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6dfa9b02eb15447c85f5a65c4637e370b0d9ec3
[INFO] testing Cobrand/tcp_minigame 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%2FCobrand%2Ftcp_minigame" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Cobrand/tcp_minigame 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/Cobrand/tcp_minigame
[INFO] finished tweaking git repo https://github.com/Cobrand/tcp_minigame
[INFO] tweaked toml for git repo https://github.com/Cobrand/tcp_minigame written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Cobrand/tcp_minigame 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sdl2-sys v0.27.0
[INFO] [stderr]   Downloaded serde_codegen v0.8.19
[INFO] [stderr]   Downloaded error-chain v0.7.1
[INFO] [stderr]   Downloaded serde_derive v0.8.19
[INFO] [stderr]   Downloaded serde_codegen_internals v0.11.1
[INFO] [stderr]   Downloaded serde v0.8.19
[INFO] [stderr]   Downloaded syn v0.10.3
[INFO] [stderr]   Downloaded sdl2 v0.27.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 5f1a59a5314fcb50bba5e25612b209bb981482970ab3ac772c258b98f6f82fb1
[INFO] running `Command { std: "docker" "start" "-a" "5f1a59a5314fcb50bba5e25612b209bb981482970ab3ac772c258b98f6f82fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f1a59a5314fcb50bba5e25612b209bb981482970ab3ac772c258b98f6f82fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f1a59a5314fcb50bba5e25612b209bb981482970ab3ac772c258b98f6f82fb1", kill_on_drop: false }`
[INFO] [stdout] 5f1a59a5314fcb50bba5e25612b209bb981482970ab3ac772c258b98f6f82fb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 3afb59e0e3c5fe5494f4b575ee0fbc08b4e5fbc84af626cdb2f99aafe7f407c2
[INFO] running `Command { std: "docker" "start" "-a" "3afb59e0e3c5fe5494f4b575ee0fbc08b4e5fbc84af626cdb2f99aafe7f407c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.2.18
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling gcc v0.3.39
[INFO] [stderr]    Compiling quote v0.3.10
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling sdl2-sys v0.27.0
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling serde v0.8.19
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling syn v0.10.3
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling bincode v0.6.0
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.1
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling sdl2 v0.27.0
[INFO] [stderr]    Compiling serde_codegen v0.8.19
[INFO] [stderr]    Compiling error-chain v0.7.1
[INFO] [stderr]    Compiling serde_derive v0.8.19
[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/serde_derive-0.8.19/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro, proc_macro_lib)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[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 `serde_derive` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3afb59e0e3c5fe5494f4b575ee0fbc08b4e5fbc84af626cdb2f99aafe7f407c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3afb59e0e3c5fe5494f4b575ee0fbc08b4e5fbc84af626cdb2f99aafe7f407c2", kill_on_drop: false }`
[INFO] [stdout] 3afb59e0e3c5fe5494f4b575ee0fbc08b4e5fbc84af626cdb2f99aafe7f407c2
