[INFO] cloning repository https://github.com/shivshankar3578/hyper-rest-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shivshankar3578/hyper-rest-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshivshankar3578%2Fhyper-rest-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshivshankar3578%2Fhyper-rest-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91904dbb96eac4bbc1b5e8c2b029702134a6f3e2
[INFO] documenting shivshankar3578/hyper-rest-example against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshivshankar3578%2Fhyper-rest-example" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shivshankar3578/hyper-rest-example on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shivshankar3578/hyper-rest-example
[INFO] finished tweaking git repo https://github.com/shivshankar3578/hyper-rest-example
[INFO] tweaked toml for git repo https://github.com/shivshankar3578/hyper-rest-example written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/shivshankar3578/hyper-rest-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded maud v0.17.2
[INFO] [stderr]   Downloaded maud_macros v0.17.2
[INFO] [stderr]   Downloaded mysql v12.3.1
[INFO] [stderr]   Downloaded diesel v1.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e6a70b70dd931ed8c59c009e6912f2513fe3255f55aa9c3d7d5b416ad9fbfe9
[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" "4e6a70b70dd931ed8c59c009e6912f2513fe3255f55aa9c3d7d5b416ad9fbfe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e6a70b70dd931ed8c59c009e6912f2513fe3255f55aa9c3d7d5b416ad9fbfe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e6a70b70dd931ed8c59c009e6912f2513fe3255f55aa9c3d7d5b416ad9fbfe9", kill_on_drop: false }`
[INFO] [stdout] 4e6a70b70dd931ed8c59c009e6912f2513fe3255f55aa9c3d7d5b416ad9fbfe9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5d0b1373d81fc3406b3cdc1cd775b939b11c657be6ced56cb74112b1d410a82
[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" "c5d0b1373d81fc3406b3cdc1cd775b939b11c657be6ced56cb74112b1d410a82", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v1.0.37
[INFO] [stderr]    Compiling literalext v0.1.1
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]    Compiling maud_htmlescape v0.17.0
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking relay v0.1.1
[INFO] [stderr]    Compiling mysqlclient-sys v0.2.3
[INFO] [stderr]     Checking atoi v0.2.3
[INFO] [stderr]     Checking proc-macro2 v0.2.3
[INFO] [stderr]     Checking regex-syntax v0.5.3
[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/literalext-0.1.1/src/lib.rs:19:37
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![cfg_attr(feature = "proc-macro", feature(proc_macro))]
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking base64 v0.9.0
[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 `literalext`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c5d0b1373d81fc3406b3cdc1cd775b939b11c657be6ced56cb74112b1d410a82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5d0b1373d81fc3406b3cdc1cd775b939b11c657be6ced56cb74112b1d410a82", kill_on_drop: false }`
[INFO] [stdout] c5d0b1373d81fc3406b3cdc1cd775b939b11c657be6ced56cb74112b1d410a82