[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] testing DMSrs/dmsrs against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDMSrs%2Fdmsrs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DMSrs/dmsrs on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-14/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" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded url v1.7.1
[INFO] [stderr]   Downloaded traitobject v0.1.0
[INFO] [stderr]   Downloaded typeable v0.1.2
[INFO] [stderr]   Downloaded unicase v1.4.2
[INFO] [stderr]   Downloaded smallvec v0.6.2
[INFO] [stderr]   Downloaded hyper v0.10.13
[INFO] [stderr]   Downloaded num_cpus v1.8.0
[INFO] [stderr]   Downloaded toml v0.4.6
[INFO] [stderr]   Downloaded backtrace v0.3.9
[INFO] [stderr]   Downloaded pest v0.4.1
[INFO] [stderr]   Downloaded cc v1.0.17
[INFO] [stderr]   Downloaded synom v0.11.3
[INFO] [stderr]   Downloaded crossbeam-epoch v0.3.1
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] [stderr]   Downloaded gcc v0.3.54
[INFO] [stderr]   Downloaded rustc-demangle v0.1.8
[INFO] [stderr]   Downloaded base64 v0.9.2
[INFO] [stderr]   Downloaded rayon-core v1.4.0
[INFO] [stderr]   Downloaded handlebars v0.28.3
[INFO] [stderr]   Downloaded httparse v1.3.2
[INFO] [stderr]   Downloaded tera v0.10.10
[INFO] [stderr]   Downloaded mime v0.2.6
[INFO] [stderr]   Downloaded rayon v0.7.1
[INFO] [stderr]   Downloaded crossbeam-deque v0.2.0
[INFO] [stderr]   Downloaded idna v0.1.5
[INFO] [stderr]   Downloaded humansize v1.1.0
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded syn v0.11.11
[INFO] [stderr]   Downloaded nodrop v0.1.12
[INFO] [stderr]   Downloaded ordermap v0.2.13
[INFO] [stderr]   Downloaded crossbeam-utils v0.2.2
[INFO] [stderr]   Downloaded untrusted v0.5.1
[INFO] [stderr]   Downloaded cookie v0.9.2
[INFO] [stderr]   Downloaded language-tags v0.2.2
[INFO] [stderr]   Downloaded yansi v0.4.0
[INFO] [stderr]   Downloaded unicode-xid v0.0.4
[INFO] [stderr]   Downloaded percent-encoding v1.0.1
[INFO] [stderr]   Downloaded pest_derive v1.0.7
[INFO] [stderr]   Downloaded itoa v0.4.2
[INFO] [stderr]   Downloaded unidecode v0.3.0
[INFO] [stderr]   Downloaded error-chain v0.11.0
[INFO] [stderr]   Downloaded isatty v0.1.8
[INFO] [stderr]   Downloaded rocket v0.3.14
[INFO] [stderr]   Downloaded backtrace-sys v0.1.23
[INFO] [stderr]   Downloaded state v0.4.1
[INFO] [stderr]   Downloaded askama_shared v0.7.0
[INFO] [stderr]   Downloaded askama_derive v0.7.0
[INFO] [stderr]   Downloaded rocket_codegen v0.3.14
[INFO] [stderr]   Downloaded pear v0.0.18
[INFO] [stderr]   Downloaded pest v0.3.3
[INFO] [stderr]   Downloaded atomic v0.4.0
[INFO] [stderr]   Downloaded pear_codegen v0.0.18
[INFO] [stderr]   Downloaded rocket_contrib v0.3.14
[INFO] [stderr]   Downloaded slug v0.1.3
[INFO] [stderr]   Downloaded askama v0.7.0
[INFO] [stderr]   Downloaded ring v0.11.0
[INFO] [stderr]   Downloaded version_check v0.1.4
[INFO] [stderr]   Downloaded pest v1.0.6
[INFO] [stderr]   Downloaded nom v4.0.0
[INFO] [stderr]   Downloaded serde_json v1.0.22
[INFO] [stderr]   Downloaded tera v0.11.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a769f893b78d8782a9f45e6dddd537ef27ab7cf177434e99ba1382dc6b4007ab
[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" "a769f893b78d8782a9f45e6dddd537ef27ab7cf177434e99ba1382dc6b4007ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a769f893b78d8782a9f45e6dddd537ef27ab7cf177434e99ba1382dc6b4007ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a769f893b78d8782a9f45e6dddd537ef27ab7cf177434e99ba1382dc6b4007ab", kill_on_drop: false }`
[INFO] [stdout] a769f893b78d8782a9f45e6dddd537ef27ab7cf177434e99ba1382dc6b4007ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b71cc2292555cf34c457badce24fcea3c0076fa8de966a218b91f9b7588cd8ad
[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" "b71cc2292555cf34c457badce24fcea3c0076fa8de966a218b91f9b7588cd8ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]    Compiling smallvec v0.6.2
[INFO] [stderr]    Compiling constant_time_eq v0.1.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.8
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling pear v0.0.18
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling ordermap v0.2.13
[INFO] [stderr]    Compiling arrayref v0.3.4
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling unidecode v0.3.0
[INFO] [stderr]    Compiling askama_shared v0.7.0
[INFO] [stderr]    Compiling md5 v0.3.7
[INFO] [stderr]    Compiling fallible-iterator v0.1.4
[INFO] [stderr]    Compiling hex v0.2.0
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]    Compiling cairo-rs v0.3.0
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling c_vec v1.2.1
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling pest v0.4.1
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling atomic v0.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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 regex-syntax v0.5.6
[INFO] [stderr]    Compiling regex-syntax v0.6.1
[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" "b71cc2292555cf34c457badce24fcea3c0076fa8de966a218b91f9b7588cd8ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b71cc2292555cf34c457badce24fcea3c0076fa8de966a218b91f9b7588cd8ad", kill_on_drop: false }`
[INFO] [stdout] b71cc2292555cf34c457badce24fcea3c0076fa8de966a218b91f9b7588cd8ad