[INFO] cloning repository https://github.com/ARwMq9b6/qrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ARwMq9b6/qrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FARwMq9b6%2Fqrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FARwMq9b6%2Fqrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13f6f5a6eed4bcbb5ad91393e02522c5a19fd789
[INFO] testing ARwMq9b6/qrs against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FARwMq9b6%2Fqrs" "/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/ARwMq9b6/qrs on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ARwMq9b6/qrs
[INFO] finished tweaking git repo https://github.com/ARwMq9b6/qrs
[INFO] tweaked toml for git repo https://github.com/ARwMq9b6/qrs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ARwMq9b6/qrs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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 vec_map v0.7.0
[INFO] [stderr]   Downloaded unicode-segmentation v1.1.0
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.11
[INFO] [stderr]   Downloaded quick-error v1.1.0
[INFO] [stderr]   Downloaded backtrace-sys v0.1.10
[INFO] [stderr]   Downloaded c_linked_list v1.1.0
[INFO] [stderr]   Downloaded term_size v0.2.3
[INFO] [stderr]   Downloaded num-rational v0.1.36
[INFO] [stderr]   Downloaded clap v2.22.1
[INFO] [stderr]   Downloaded lazy_static v0.2.5
[INFO] [stderr]   Downloaded hyper v0.10.5
[INFO] [stderr]   Downloaded mime v0.2.3
[INFO] [stderr]   Downloaded serde v0.9.12
[INFO] [stderr]   Downloaded get_if_addrs v0.4.0
[INFO] [stderr]   Downloaded num_cpus v1.3.0
[INFO] [stderr]   Downloaded syn v0.11.9
[INFO] [stderr]   Downloaded gif v0.9.1
[INFO] [stderr]   Downloaded rayon v0.6.0
[INFO] [stderr]   Downloaded png v0.6.2
[INFO] [stderr]   Downloaded num-integer v0.1.33
[INFO] [stderr]   Downloaded serde_json v0.9.9
[INFO] [stderr]   Downloaded rocket_contrib v0.2.4
[INFO] [stderr]   Downloaded qrcode v0.2.1
[INFO] [stderr]   Downloaded cookie v0.6.1
[INFO] [stderr]   Downloaded futures v0.1.11
[INFO] [stderr]   Downloaded deflate v0.7.5
[INFO] [stderr]   Downloaded image v0.12.3
[INFO] [stderr]   Downloaded rocket v0.2.4
[INFO] [stderr]   Downloaded handlebars v0.25.2
[INFO] [stderr]   Downloaded derive-error-chain v0.10.0
[INFO] [stderr]   Downloaded rocket_codegen v0.2.4
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1822b44964514af0d033e9118561465d8ac0d2114ac69bd57bcea2f99483d719
[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" "1822b44964514af0d033e9118561465d8ac0d2114ac69bd57bcea2f99483d719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1822b44964514af0d033e9118561465d8ac0d2114ac69bd57bcea2f99483d719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1822b44964514af0d033e9118561465d8ac0d2114ac69bd57bcea2f99483d719", kill_on_drop: false }`
[INFO] [stdout] 1822b44964514af0d033e9118561465d8ac0d2114ac69bd57bcea2f99483d719
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f099567379f85a8f85da39d50b37f7c5a35e5a27375e8eb2d44c9244297098d9
[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" "f099567379f85a8f85da39d50b37f7c5a35e5a27375e8eb2d44c9244297098d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.21
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]    Compiling version_check v0.1.0
[INFO] [stderr]    Compiling log v0.3.7
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling gcc v0.3.45
[INFO] [stderr]    Compiling rustc-serialize v0.3.23
[INFO] [stderr]    Compiling httparse v1.2.1
[INFO] [stderr]    Compiling term v0.4.5
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling adler32 v1.0.0
[INFO] [stderr]    Compiling color_quant v1.0.0
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling regex-syntax v0.4.0
[INFO] [stderr]    Compiling serde v0.9.12
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling state v0.2.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/state-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[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 `state`.
[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" "f099567379f85a8f85da39d50b37f7c5a35e5a27375e8eb2d44c9244297098d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f099567379f85a8f85da39d50b37f7c5a35e5a27375e8eb2d44c9244297098d9", kill_on_drop: false }`
[INFO] [stdout] f099567379f85a8f85da39d50b37f7c5a35e5a27375e8eb2d44c9244297098d9
