[INFO] updating cached repository https://github.com/komalklr/r1cs_gadgets2
[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] b6fe40e41f8592484ba5d7ad87991187e8ff956f
[INFO] testing komalklr/r1cs_gadgets2 against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkomalklr%2Fr1cs_gadgets2" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  86% (390/452)   
Checking out files:  87% (394/452)   
Checking out files:  88% (398/452)   
Checking out files:  89% (403/452)   
Checking out files:  90% (407/452)   
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Checking out files:  93% (421/452)   
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Checking out files:  97% (439/452)   
Checking out files:  98% (443/452)   
Checking out files:  99% (448/452)   
Checking out files: 100% (452/452)   
Checking out files: 100% (452/452), done.
[INFO] validating manifest of git repo https://github.com/komalklr/r1cs_gadgets2 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/komalklr/r1cs_gadgets2
[INFO] finished tweaking git repo https://github.com/komalklr/r1cs_gadgets2
[INFO] tweaked toml for git repo https://github.com/komalklr/r1cs_gadgets2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/komalklr/r1cs_gadgets2 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-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" "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] deb7743dbab7b2b7e6ca4c38bfa4d30ddb386dfcb1e0f5b1fe06859af79f38de
[INFO] running `"docker" "start" "-a" "deb7743dbab7b2b7e6ca4c38bfa4d30ddb386dfcb1e0f5b1fe06859af79f38de"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.20
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling packed_simd v0.3.3
[INFO] [stderr]    Compiling subtle v2.2.2
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/subtle-2.2.2/src/lib.rs:150:14
[INFO] [stderr]     |
[INFO] [stderr] 150 |     unsafe { asm!("" : "=r"(input) : "0"(input) ) }
[INFO] [stderr]     |              ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: replace with: `llvm_asm!`
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stderr]     = note: alternatively, switch to llvm_asm! to keep your code working as it is
[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/subtle-2.2.2/src/lib.rs:12:34
[INFO] [stderr]    |
[INFO] [stderr] 12 | #![cfg_attr(feature = "nightly", feature(asm))]
[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/subtle-2.2.2/src/lib.rs:13:34
[INFO] [stderr]    |
[INFO] [stderr] 13 | #![cfg_attr(feature = "nightly", feature(external_doc))]
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `subtle`.
[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 `"docker" "inspect" "deb7743dbab7b2b7e6ca4c38bfa4d30ddb386dfcb1e0f5b1fe06859af79f38de"`
[INFO] running `"docker" "rm" "-f" "deb7743dbab7b2b7e6ca4c38bfa4d30ddb386dfcb1e0f5b1fe06859af79f38de"`
[INFO] [stdout] deb7743dbab7b2b7e6ca4c38bfa4d30ddb386dfcb1e0f5b1fe06859af79f38de