[INFO] cloning repository https://github.com/childhooooo/cartta
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/childhooooo/cartta" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchildhooooo%2Fcartta", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchildhooooo%2Fcartta'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8392c0811bf70ae650dfbbfd6a5bce4fcb0e14c2
[INFO] checking childhooooo/cartta against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchildhooooo%2Fcartta" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/childhooooo/cartta on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/childhooooo/cartta
[INFO] finished tweaking git repo https://github.com/childhooooo/cartta
[INFO] tweaked toml for git repo https://github.com/childhooooo/cartta written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/childhooooo/cartta already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcecb4fffb46c56c692bb4bccb4c353ad8a57a96d9dccf20d78d435e1f2545c3
[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" "bcecb4fffb46c56c692bb4bccb4c353ad8a57a96d9dccf20d78d435e1f2545c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcecb4fffb46c56c692bb4bccb4c353ad8a57a96d9dccf20d78d435e1f2545c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcecb4fffb46c56c692bb4bccb4c353ad8a57a96d9dccf20d78d435e1f2545c3", kill_on_drop: false }`
[INFO] [stdout] bcecb4fffb46c56c692bb4bccb4c353ad8a57a96d9dccf20d78d435e1f2545c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3942d49399031d34a74e47f045f3451a1baa06438739ab67bd72512f1b533ae4
[INFO] running `Command { std: "docker" "start" "-a" "3942d49399031d34a74e47f045f3451a1baa06438739ab67bd72512f1b533ae4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]     Checking lazycell v1.2.0
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking ucd-util v0.1.2
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking unic-common v0.7.0
[INFO] [stderr]     Checking unic-char-range v0.7.0
[INFO] [stderr]     Checking string_cache_shared v0.3.0
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking utf-8 v0.7.4
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking deunicode v0.4.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling pulldown-cmark v0.0.11
[INFO] [stderr]     Checking opaque-debug v0.1.1
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]     Checking htmlstream v0.1.3
[INFO] [stderr]    Compiling if_chain v0.1.3
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking filetime v0.2.1
[INFO] [stderr]    Compiling rocket_codegen v0.4.0
[INFO] [stderr]    Compiling rocket_contrib_codegen v0.4.0
[INFO] [stderr]    Compiling rocket v0.4.0
[INFO] [stderr]    Compiling pear_codegen v0.1.0
[INFO] [stderr]     Checking tokio-executor v0.1.5
[INFO] [stderr]    Compiling pest v2.0.2
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking unic-ucd-version v0.7.0
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking unic-char-property v0.7.0
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking walkdir v2.2.6
[INFO] [stderr]     Checking slug v0.1.4
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking xss v0.1.0 (https://github.com/childhooooo/xss.rs.git#d229e57c)
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking phf v0.7.23
[INFO] [stderr]     Checking r2d2 v0.8.3
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking unic-ucd-segment v0.7.0
[INFO] [stderr]     Checking lock_api v0.1.4
[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/lock_api-0.1.4/src/lib.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 | #![cfg_attr(feature = "nightly", 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 `lock_api`
[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" "3942d49399031d34a74e47f045f3451a1baa06438739ab67bd72512f1b533ae4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3942d49399031d34a74e47f045f3451a1baa06438739ab67bd72512f1b533ae4", kill_on_drop: false }`
[INFO] [stdout] 3942d49399031d34a74e47f045f3451a1baa06438739ab67bd72512f1b533ae4