[INFO] cloning repository https://github.com/DMSrs/dmsrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DMSrs/dmsrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDMSrs%2Fdmsrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDMSrs%2Fdmsrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1112ccf256dbd14a6101cec7c74503ddbef89dc
[INFO] checking DMSrs/dmsrs against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDMSrs%2Fdmsrs" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DMSrs/dmsrs 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/DMSrs/dmsrs
[INFO] finished tweaking git repo https://github.com/DMSrs/dmsrs
[INFO] tweaked toml for git repo https://github.com/DMSrs/dmsrs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/DMSrs/dmsrs 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] a40efec64b16131ee884242008b213b1f9caeb9580d19e5b327ea53bff0b56c2
[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" "a40efec64b16131ee884242008b213b1f9caeb9580d19e5b327ea53bff0b56c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a40efec64b16131ee884242008b213b1f9caeb9580d19e5b327ea53bff0b56c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a40efec64b16131ee884242008b213b1f9caeb9580d19e5b327ea53bff0b56c2", kill_on_drop: false }`
[INFO] [stdout] a40efec64b16131ee884242008b213b1f9caeb9580d19e5b327ea53bff0b56c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] afbc6a95ab3f623904976ffaba4e999ee4a6a36cc560b84ace7c2fbe46f94ea7
[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" "afbc6a95ab3f623904976ffaba4e999ee4a6a36cc560b84ace7c2fbe46f94ea7", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]    Compiling untrusted v0.5.1
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking arrayref v0.3.4
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]    Compiling pear v0.0.18
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking siphasher v0.2.2
[INFO] [stderr]    Compiling askama_shared v0.7.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling ordermap v0.2.13
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]    Compiling smallvec v0.6.2
[INFO] [stderr]     Checking md5 v0.3.7
[INFO] [stderr]     Checking unidecode v0.3.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking fallible-iterator v0.1.4
[INFO] [stderr]    Compiling cairo-rs v0.3.0
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking pest v0.4.1
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking c_vec v1.2.1
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking pest v0.3.3
[INFO] [stderr]     Checking atomic v0.4.0
[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/atomic-0.4.0/src/lib.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |     feature = "nightly", feature(const_fn, cfg_target_has_atomic, integer_atomics, atomic_min_max)
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling arrayvec v0.4.7
[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" "afbc6a95ab3f623904976ffaba4e999ee4a6a36cc560b84ace7c2fbe46f94ea7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afbc6a95ab3f623904976ffaba4e999ee4a6a36cc560b84ace7c2fbe46f94ea7", kill_on_drop: false }`
[INFO] [stdout] afbc6a95ab3f623904976ffaba4e999ee4a6a36cc560b84ace7c2fbe46f94ea7