[INFO] fetching crate webcord 0.0.0...
[INFO] testing webcord-0.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate webcord 0.0.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate webcord 0.0.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate webcord 0.0.0
[INFO] finished tweaking crates.io crate webcord 0.0.0
[INFO] tweaked toml for crates.io crate webcord 0.0.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate webcord 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.55
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.55
[INFO] [stderr]   Downloaded tokio-executor v0.1.9
[INFO] [stderr]   Downloaded anyhow v1.0.25
[INFO] [stderr]   Downloaded ct-logs v0.6.0
[INFO] [stderr]   Downloaded js-sys v0.3.32
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.17
[INFO] [stderr]   Downloaded miniz_oxide v0.3.5
[INFO] [stderr]   Downloaded actix-macros v0.1.0
[INFO] [stderr]   Downloaded actix-web-codegen v0.2.0-alpha.2
[INFO] [stderr]   Downloaded alloc-no-stdlib v2.0.1
[INFO] [stderr]   Downloaded actix-router v0.2.0
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.55
[INFO] [stderr]   Downloaded actix-testing v1.0.0-alpha.3
[INFO] [stderr]   Downloaded actix-utils v1.0.0-alpha.3
[INFO] [stderr]   Downloaded error-chain v0.12.1
[INFO] [stderr]   Downloaded dirmod v0.2.0-alpha.1
[INFO] [stderr]   Downloaded bumpalo v2.6.0
[INFO] [stderr]   Downloaded tokio v0.2.4
[INFO] [stderr]   Downloaded nom v5.0.1
[INFO] [stderr]   Downloaded actix-files v0.2.0-alpha.3
[INFO] [stderr]   Downloaded input_buffer v0.2.0
[INFO] [stderr]   Downloaded alloc-stdlib v0.2.1
[INFO] [stderr]   Downloaded hyper-rustls v0.17.1
[INFO] [stderr]   Downloaded dirmod-codegen v0.2.0-alpha.1
[INFO] [stderr]   Downloaded actix-threadpool v0.3.0
[INFO] [stderr]   Downloaded actix-service v1.0.0
[INFO] [stderr]   Downloaded derive_more v0.99.2
[INFO] [stderr]   Downloaded toml v0.5.5
[INFO] [stderr]   Downloaded reqwest v0.9.22
[INFO] [stderr]   Downloaded tungstenite v0.9.2
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.55
[INFO] [stderr]   Downloaded lock_api v0.3.2
[INFO] [stderr]   Downloaded webpki v0.21.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.55
[INFO] [stderr]   Downloaded tokio-timer v0.2.12
[INFO] [stderr]   Downloaded brotli v3.3.0
[INFO] [stderr]   Downloaded awc v1.0.0-alpha.4
[INFO] [stderr]   Downloaded bytes v0.5.2
[INFO] [stderr]   Downloaded actix-web v2.0.0-alpha.4
[INFO] [stderr]   Downloaded bytestring v0.1.1
[INFO] [stderr]   Downloaded brotli-decompressor v2.3.0
[INFO] [stderr]   Downloaded tokio-rustls v0.10.2
[INFO] [stderr]   Downloaded uwl v0.4.2
[INFO] [stderr]   Downloaded actix-tls v1.0.0-alpha.3
[INFO] [stderr]   Downloaded actix-server v1.0.0-alpha.4
[INFO] [stderr]   Downloaded actix-connect v1.0.0-alpha.3
[INFO] [stderr]   Downloaded getset v0.0.9
[INFO] [stderr]   Downloaded web-sys v0.3.32
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.55
[INFO] [stderr]   Downloaded mime v0.3.14
[INFO] [stderr]   Downloaded tokio-reactor v0.1.11
[INFO] [stderr]   Downloaded lexical-core v0.4.6
[INFO] [stderr]   Downloaded ring v0.16.9
[INFO] [stderr]   Downloaded actix-http v1.0.0-alpha.5
[INFO] [stderr]   Downloaded serenity v0.7.3
[INFO] [stderr]   Downloaded command_attr v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ed94439441e445f3da430404e882aa2b668936201fce13fd7e93fcaad487753
[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" "2ed94439441e445f3da430404e882aa2b668936201fce13fd7e93fcaad487753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ed94439441e445f3da430404e882aa2b668936201fce13fd7e93fcaad487753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ed94439441e445f3da430404e882aa2b668936201fce13fd7e93fcaad487753", kill_on_drop: false }`
[INFO] [stdout] 2ed94439441e445f3da430404e882aa2b668936201fce13fd7e93fcaad487753
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c6e305ffdc322ba123fc94010e1eae4e09fe7b19c0fa60209a2f4bd627ac1a2
[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" "2c6e305ffdc322ba123fc94010e1eae4e09fe7b19c0fa60209a2f4bd627ac1a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling futures-sink v0.3.1
[INFO] [stderr]    Compiling bytes v0.5.2
[INFO] [stderr]    Compiling futures-io v0.3.1
[INFO] [stderr]    Compiling copyless v0.1.4
[INFO] [stderr]    Compiling untrusted v0.7.0
[INFO] [stderr]    Compiling alloc-no-stdlib v2.0.1
[INFO] [stderr]    Compiling serenity v0.7.3
[INFO] [stderr]    Compiling uwl v0.4.2
[INFO] [stderr]    Compiling ring v0.16.9
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling nom v5.0.1
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling encoding_rs v0.8.20
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling socket2 v0.3.11
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling lexical-core v0.4.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling futures-channel v0.3.1
[INFO] [stderr]    Compiling alloc-stdlib v0.2.1
[INFO] [stderr]    Compiling resolv-conf v0.6.2
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling http v0.2.0
[INFO] [stderr]    Compiling bytestring v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling publicsuffix v1.5.4
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling brotli-decompressor v2.3.0
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling serde-hjson v0.9.1
[INFO] [stderr]    Compiling sha-1 v0.8.1
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling tokio-buf v0.1.1
[INFO] [stderr]    Compiling string v0.2.1
[INFO] [stderr]    Compiling input_buffer v0.2.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling tokio v0.2.4
[INFO] [stderr]    Compiling tokio-threadpool v0.1.17
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling cookie v0.12.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.11
[INFO] [stderr]    Compiling flate2 v1.0.13
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling brotli v3.3.0
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling http-body v0.1.0
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling tungstenite v0.9.2
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling webpki v0.21.0
[INFO] [stderr]    Compiling ct-logs v0.6.0
[INFO] [stderr]    Compiling actix-codec v0.2.0
[INFO] [stderr]    Compiling rustls v0.16.0
[INFO] [stderr]    Compiling webpki-roots v0.17.0
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]    Compiling tokio-rustls v0.10.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling hyper-rustls v0.17.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]    Compiling derive_more v0.99.2
[INFO] [stderr]    Compiling actix-macros v0.1.0
[INFO] [stderr]    Compiling enum-as-inner v0.3.0
[INFO] [stderr]    Compiling async-trait v0.1.21
[INFO] [stderr]    Compiling v_escape_derive v0.5.6
[INFO] [stderr]    Compiling actix-web-codegen v0.2.0-alpha.2
[INFO] [stderr]    Compiling dirmod-codegen v0.2.0-alpha.1
[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/dirmod-codegen-0.2.0-alpha.1/src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(proc_macro_span)]
[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 `dirmod-codegen`
[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" "2c6e305ffdc322ba123fc94010e1eae4e09fe7b19c0fa60209a2f4bd627ac1a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c6e305ffdc322ba123fc94010e1eae4e09fe7b19c0fa60209a2f4bd627ac1a2", kill_on_drop: false }`
[INFO] [stdout] 2c6e305ffdc322ba123fc94010e1eae4e09fe7b19c0fa60209a2f4bd627ac1a2