[INFO] fetching crate aesm-client 0.2.0...
[INFO] extracting crate aesm-client 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/aesm-client/0.2.0
[INFO] extracting crate aesm-client 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/aesm-client/0.2.0
[INFO] validating manifest of aesm-client-0.2.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of aesm-client-0.2.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing aesm-client-0.2.0
[INFO] removed 1 missing tests
[INFO] finished frobbing aesm-client-0.2.0
[INFO] frobbed toml for aesm-client-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/aesm-client/0.2.0/Cargo.toml
[INFO] started frobbing aesm-client-0.2.0
[INFO] removed 1 missing tests
[INFO] finished frobbing aesm-client-0.2.0
[INFO] frobbed toml for aesm-client-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/aesm-client/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing aesm-client-0.2.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/aesm-client/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 4ae904ae69b84f2f3a38eab00dcf5f3cab9fcda9382639f369e36fe9f49695f4
[INFO] running `"docker" "start" "-a" "4ae904ae69b84f2f3a38eab00dcf5f3cab9fcda9382639f369e36fe9f49695f4"`
[INFO] [stderr]    Compiling protobuf v1.7.5
[INFO] [stderr]    Compiling protoc v1.7.5
[INFO] [stderr]    Compiling unix_socket2 v0.5.4
[INFO] [stderr]    Compiling protoc-rust v1.7.5
[INFO] [stderr]    Compiling aesm-client v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.11s
[INFO] running `"docker" "inspect" "4ae904ae69b84f2f3a38eab00dcf5f3cab9fcda9382639f369e36fe9f49695f4"`
[INFO] running `"docker" "rm" "-f" "4ae904ae69b84f2f3a38eab00dcf5f3cab9fcda9382639f369e36fe9f49695f4"`
[INFO] [stdout] 4ae904ae69b84f2f3a38eab00dcf5f3cab9fcda9382639f369e36fe9f49695f4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/aesm-client/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 245a117ebe68a487ac66fff3762cf32ecf86a0789857dc937566e4d715fae841
[INFO] running `"docker" "start" "-a" "245a117ebe68a487ac66fff3762cf32ecf86a0789857dc937566e4d715fae841"`
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]    Compiling fortanix-sgx-abi v0.3.3
[INFO] [stderr]    Compiling sgx-isa v0.3.0
[INFO] [stderr]    Compiling sgxs v0.7.0
[INFO] [stderr]    Compiling enclave-runner v0.2.0
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/enclave-runner-0.2.0/src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![feature(asm)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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 `enclave-runner`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "245a117ebe68a487ac66fff3762cf32ecf86a0789857dc937566e4d715fae841"`
[INFO] running `"docker" "rm" "-f" "245a117ebe68a487ac66fff3762cf32ecf86a0789857dc937566e4d715fae841"`
[INFO] [stdout] 245a117ebe68a487ac66fff3762cf32ecf86a0789857dc937566e4d715fae841