[INFO] cloning repository https://github.com/LinusCDE/remacle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LinusCDE/remacle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLinusCDE%2Fremacle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLinusCDE%2Fremacle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a912832af0fadb82641316bfe13408d971cc3283
[INFO] checking LinusCDE/remacle against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLinusCDE%2Fremacle" "/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/LinusCDE/remacle on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/LinusCDE/remacle
[INFO] removed path dependency libremarkable from git repo https://github.com/LinusCDE/remacle
[INFO] finished tweaking git repo https://github.com/LinusCDE/remacle
[INFO] tweaked toml for git repo https://github.com/LinusCDE/remacle written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/LinusCDE/remacle 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] [stderr] warning: dependency (libremarkable) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-1/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://git.cosmos-ink.net/linus/mango-client.git`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (libremarkable) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a204ae7236129d80eacadb586706385abf8fdb3549c626fc1ae0625612f67313
[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" "a204ae7236129d80eacadb586706385abf8fdb3549c626fc1ae0625612f67313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a204ae7236129d80eacadb586706385abf8fdb3549c626fc1ae0625612f67313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a204ae7236129d80eacadb586706385abf8fdb3549c626fc1ae0625612f67313", kill_on_drop: false }`
[INFO] [stdout] a204ae7236129d80eacadb586706385abf8fdb3549c626fc1ae0625612f67313
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f3f4f75bab45431efbf9762a3a026f4008eb941f7befe7ec3738b25620b2cf7
[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" "3f3f4f75bab45431efbf9762a3a026f4008eb941f7befe7ec3738b25620b2cf7", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (libremarkable) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking ioctl-gen v0.1.1
[INFO] [stderr]     Checking strerror v0.6.3
[INFO] [stderr]     Checking aabb-quadtree v0.1.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking epoll v4.3.1
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking num-rational v0.2.4
[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/atomic-0.4.6/src/lib.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |     feature = "nightly", feature(const_fn, cfg_target_has_atomic, atomic_min_max)
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]     Checking tracing-futures v0.2.4
[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 `atomic`
[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" "3f3f4f75bab45431efbf9762a3a026f4008eb941f7befe7ec3738b25620b2cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f3f4f75bab45431efbf9762a3a026f4008eb941f7befe7ec3738b25620b2cf7", kill_on_drop: false }`
[INFO] [stdout] 3f3f4f75bab45431efbf9762a3a026f4008eb941f7befe7ec3738b25620b2cf7