[INFO] updating cached repository https://github.com/jiegec/online_decaf
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f2e64f03166046ee522535e4a79999b5fccd0cb5
[INFO] testing jiegec/online_decaf against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiegec%2Fonline_decaf" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jiegec/online_decaf on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jiegec/online_decaf
[INFO] finished tweaking git repo https://github.com/jiegec/online_decaf
[INFO] tweaked toml for git repo https://github.com/jiegec/online_decaf written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jiegec/online_decaf already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e01e931b409d60dd6e12821b23cedf92004b6b02b42dee6d9a5380502a39406a
[INFO] running `"docker" "start" "-a" "e01e931b409d60dd6e12821b23cedf92004b6b02b42dee6d9a5380502a39406a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling bitset v0.1.0 (https://github.com/MashPlant/bitset#a20d7b54)
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling print v0.1.0 (https://github.com/MashPlant/re2dfa#d3544ab7)
[INFO] [stderr]    Compiling typed-arena v1.6.1
[INFO] [stderr]    Compiling strum v0.15.0
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.5
[INFO] [stderr]    Compiling bytecount v0.3.2
[INFO] [stderr]    Compiling rgb v0.8.14
[INFO] [stderr]    Compiling base-x v0.2.5
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]    Compiling yew v0.9.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/smallvec-0.6.10/lib.rs:33:32
[INFO] [stderr]    |
[INFO] [stderr] 33 | #![cfg_attr(feature = "union", feature(untagged_unions))]
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.5.0/src/lib.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | /     feature(
[INFO] [stderr] 16 | |         alloc_layout_extra,
[INFO] [stderr] 17 | |         allocator_api,
[INFO] [stderr] 18 | |         ptr_offset_from,
[INFO] [stderr] ...  |
[INFO] [stderr] 21 | |         dropck_eyepatch
[INFO] [stderr] 22 | |     )
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr]    Compiling unescape v0.1.0
[INFO] [stderr]    Compiling discard v1.0.4
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `smallvec`.
[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: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e01e931b409d60dd6e12821b23cedf92004b6b02b42dee6d9a5380502a39406a"`
[INFO] running `"docker" "rm" "-f" "e01e931b409d60dd6e12821b23cedf92004b6b02b42dee6d9a5380502a39406a"`
[INFO] [stdout] e01e931b409d60dd6e12821b23cedf92004b6b02b42dee6d9a5380502a39406a