[INFO] fetching crate graph-oauth 0.0.1...
[INFO] testing graph-oauth-0.0.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate graph-oauth 0.0.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate graph-oauth 0.0.1 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 graph-oauth 0.0.1
[INFO] finished tweaking crates.io crate graph-oauth 0.0.1
[INFO] tweaked toml for crates.io crate graph-oauth 0.0.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] a0084255dad16c71fb549d69866ede1aadbfc21d4a9989e2ebd36569dbf90e7a
[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" "a0084255dad16c71fb549d69866ede1aadbfc21d4a9989e2ebd36569dbf90e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0084255dad16c71fb549d69866ede1aadbfc21d4a9989e2ebd36569dbf90e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0084255dad16c71fb549d69866ede1aadbfc21d4a9989e2ebd36569dbf90e7a", kill_on_drop: false }`
[INFO] [stdout] a0084255dad16c71fb549d69866ede1aadbfc21d4a9989e2ebd36569dbf90e7a
[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] 0e7e39aa84264d4a2fe3215525c25759bdc7f871db4db7a5f9b4fa23c5a05f39
[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" "0e7e39aa84264d4a2fe3215525c25759bdc7f871db4db7a5f9b4fa23c5a05f39", kill_on_drop: false }`
[INFO] [stderr]    Compiling strum v0.14.0
[INFO] [stderr]    Compiling webbrowser v0.4.0
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]    Compiling strum_macros v0.14.0
[INFO] [stderr]    Compiling serde_yaml v0.8.14
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling serde-aux v1.1.0
[INFO] [stderr]    Compiling chrono-humanize v0.0.11
[INFO] [stderr]    Compiling from_as_file v0.1.0
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling derive_from_as v0.1.0
[INFO] [stderr]    Compiling handlebars v2.0.4
[INFO] [stderr]    Compiling snafu v0.5.0
[INFO] [stderr]    Compiling from_as v0.1.0
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.7
[INFO] [stderr]    Compiling hyper v0.13.9
[INFO] [stderr]    Compiling hyper-tls v0.4.3
[INFO] [stderr]    Compiling reqwest v0.10.10
[INFO] [stderr]    Compiling graph-error v0.0.1
[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/graph-error-0.0.1/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(try_trait)]
[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 `graph-error`
[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" "0e7e39aa84264d4a2fe3215525c25759bdc7f871db4db7a5f9b4fa23c5a05f39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e7e39aa84264d4a2fe3215525c25759bdc7f871db4db7a5f9b4fa23c5a05f39", kill_on_drop: false }`
[INFO] [stdout] 0e7e39aa84264d4a2fe3215525c25759bdc7f871db4db7a5f9b4fa23c5a05f39