[INFO] updating cached repository cheme/webrtc-peer-server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cheme/webrtc-peer-server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cheme/webrtc-peer-server" "work/ex/beta-1.38-1/sources/1.37.0/gh/cheme/webrtc-peer-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/cheme/webrtc-peer-server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cheme/webrtc-peer-server" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cheme/webrtc-peer-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cheme/webrtc-peer-server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8a52624020b49b9510c2586d398971ab3629e3ec
[INFO] sha for GitHub repo cheme/webrtc-peer-server: 8a52624020b49b9510c2586d398971ab3629e3ec
[INFO] validating manifest of cheme/webrtc-peer-server on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cheme/webrtc-peer-server on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cheme/webrtc-peer-server
[INFO] finished frobbing cheme/webrtc-peer-server
[INFO] frobbed toml for cheme/webrtc-peer-server written to work/ex/beta-1.38-1/sources/1.37.0/gh/cheme/webrtc-peer-server/Cargo.toml
[INFO] started frobbing cheme/webrtc-peer-server
[INFO] finished frobbing cheme/webrtc-peer-server
[INFO] frobbed toml for cheme/webrtc-peer-server written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cheme/webrtc-peer-server/Cargo.toml
[INFO] crate cheme/webrtc-peer-server already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cheme/webrtc-peer-server against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cheme/webrtc-peer-server:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] e7a85b6437e6fffaaa692733892c8b43cde9a3f65c49904c877e4cb309c57027
[INFO] running `"docker" "start" "-a" "e7a85b6437e6fffaaa692733892c8b43cde9a3f65c49904c877e4cb309c57027"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling scoped-tls v0.1.1
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling openssl-sys v0.9.30
[INFO] [stderr]    Compiling syntex_fmt_macros v0.5.0
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling base64 v0.9.1
[INFO] [stderr]    Compiling bytes v0.4.7
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling tokio-timer v0.2.1
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling syn v0.13.4
[INFO] [stderr]    Compiling proc-macro-hack v0.4.0
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling backtrace v0.3.6
[INFO] [stderr]    Compiling crossbeam-deque v0.3.0
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling tokio-threadpool v0.1.2
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling dotenv v0.8.0
[INFO] [stderr]    Compiling tokio v0.1.5
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling dotenv_codegen_impl v0.1.0
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling tk-listen v0.1.1
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling dotenv_codegen v0.11.0
[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dotenv_codegen-0.11.0/src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | / proc_macro_expr_decl! {
[INFO] [stderr] 11 | |     dotenv! => expand_dotenv
[INFO] [stderr] 12 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: message: assertion failed: `(left == right)`
[INFO] [stderr]              left: `Some("#[allow(unused,")`,
[INFO] [stderr]             right: `Some("#[allow(unused")`
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `dotenv_codegen`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e7a85b6437e6fffaaa692733892c8b43cde9a3f65c49904c877e4cb309c57027"`
[INFO] running `"docker" "rm" "-f" "e7a85b6437e6fffaaa692733892c8b43cde9a3f65c49904c877e4cb309c57027"`
[INFO] [stdout] e7a85b6437e6fffaaa692733892c8b43cde9a3f65c49904c877e4cb309c57027