[INFO] cloning repository https://github.com/ByungSunBae/rust_pyo3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ByungSunBae/rust_pyo3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByungSunBae%2Frust_pyo3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByungSunBae%2Frust_pyo3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 92007c16d07d8e34c6be3c832f2a20a6c14ad3cc
[INFO] checking ByungSunBae/rust_pyo3 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByungSunBae%2Frust_pyo3" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ByungSunBae/rust_pyo3 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ByungSunBae/rust_pyo3
[INFO] finished tweaking git repo https://github.com/ByungSunBae/rust_pyo3
[INFO] tweaked toml for git repo https://github.com/ByungSunBae/rust_pyo3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ByungSunBae/rust_pyo3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: target.x86_64-apple-darwin.rustflags
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01adc7a5ca96cc888eab3e4e234c6acbf40fc1033add62f6270eaa003ebc3256
[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" "01adc7a5ca96cc888eab3e4e234c6acbf40fc1033add62f6270eaa003ebc3256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01adc7a5ca96cc888eab3e4e234c6acbf40fc1033add62f6270eaa003ebc3256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01adc7a5ca96cc888eab3e4e234c6acbf40fc1033add62f6270eaa003ebc3256", kill_on_drop: false }`
[INFO] [stdout] 01adc7a5ca96cc888eab3e4e234c6acbf40fc1033add62f6270eaa003ebc3256
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0313cb5a890e335d190100318a39686b45d659d992c01cbb396982d33c0a563c
[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" "0313cb5a890e335d190100318a39686b45d659d992c01cbb396982d33c0a563c", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: target.x86_64-apple-darwin.rustflags
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling regex-syntax v0.6.13
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unindent v0.1.5
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[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-0.3.3/src/lib.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 | #![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" "0313cb5a890e335d190100318a39686b45d659d992c01cbb396982d33c0a563c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0313cb5a890e335d190100318a39686b45d659d992c01cbb396982d33c0a563c", kill_on_drop: false }`
[INFO] [stdout] 0313cb5a890e335d190100318a39686b45d659d992c01cbb396982d33c0a563c
