[INFO] fetching crate ssb-client 0.3.1...
[INFO] extracting crate ssb-client 0.3.1 into work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/ssb-client/0.3.1
[INFO] extracting crate ssb-client 0.3.1 into work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/ssb-client/0.3.1
[INFO] validating manifest of ssb-client-0.3.1 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ssb-client-0.3.1 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ssb-client-0.3.1
[INFO] finished frobbing ssb-client-0.3.1
[INFO] frobbed toml for ssb-client-0.3.1 written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/ssb-client/0.3.1/Cargo.toml
[INFO] started frobbing ssb-client-0.3.1
[INFO] finished frobbing ssb-client-0.3.1
[INFO] frobbed toml for ssb-client-0.3.1 written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/ssb-client/0.3.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ssb-rpc v0.3.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking ssb-client-0.3.1 against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-1/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/ssb-client/0.3.1:/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=forbid" "-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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] da0bb41d942f51bc083427b96b88324b039f4a197f538a459c969fd3460af590
[INFO] running `"docker" "start" "-a" "da0bb41d942f51bc083427b96b88324b039f4a197f538a459c969fd3460af590"`
[INFO] [stderr]    Compiling libsodium-sys v0.0.16
[INFO] [stderr]    Compiling secret_handshake v4.0.0
[INFO] [stderr]    Compiling box_stream v0.4.0
[INFO] [stderr]     Checking multi-consumer-stream v0.3.0
[INFO] [stderr]     Checking multi-producer-sink v0.3.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking atm-io-utils v0.1.0
[INFO] [stderr]     Checking quickcheck v0.5.0
[INFO] [stderr]     Checking packet-stream-codec v0.1.0
[INFO] [stderr]     Checking sodiumoxide v0.0.16
[INFO] [stderr]     Checking atm-async-utils v0.1.2
[INFO] [stderr]     Checking packet-stream v0.5.0
[INFO] [stderr]     Checking muxrpc v0.2.0
[INFO] [stderr] error[E0635]: unknown feature `unique`
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/secret_handshake-4.0.0/src/lib.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | #![feature(unique)]
[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 E0635`.
[INFO] [stderr] error: Could not compile `secret_handshake`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "da0bb41d942f51bc083427b96b88324b039f4a197f538a459c969fd3460af590"`
[INFO] running `"docker" "rm" "-f" "da0bb41d942f51bc083427b96b88324b039f4a197f538a459c969fd3460af590"`
[INFO] [stdout] da0bb41d942f51bc083427b96b88324b039f4a197f538a459c969fd3460af590