[INFO] crate ed25519-dalek 1.0.0-pre.0 is already in cache
[INFO] extracting crate ed25519-dalek 1.0.0-pre.0 into work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/reg/ed25519-dalek/1.0.0-pre.0
[INFO] extracting crate ed25519-dalek 1.0.0-pre.0 into work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/reg/ed25519-dalek/1.0.0-pre.0
[INFO] validating manifest of ed25519-dalek-1.0.0-pre.0 on toolchain master#e2f221c75932de7a29845c8d6f1f73536ad00c41
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ed25519-dalek-1.0.0-pre.0 on toolchain try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ed25519-dalek-1.0.0-pre.0
[INFO] finished frobbing ed25519-dalek-1.0.0-pre.0
[INFO] frobbed toml for ed25519-dalek-1.0.0-pre.0 written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/reg/ed25519-dalek/1.0.0-pre.0/Cargo.toml
[INFO] started frobbing ed25519-dalek-1.0.0-pre.0
[INFO] finished frobbing ed25519-dalek-1.0.0-pre.0
[INFO] frobbed toml for ed25519-dalek-1.0.0-pre.0 written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/reg/ed25519-dalek/1.0.0-pre.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ed25519-dalek-1.0.0-pre.0 against master#e2f221c75932de7a29845c8d6f1f73536ad00c41 for pr-57617
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57617/worker-4/master#e2f221c75932de7a29845c8d6f1f73536ad00c41:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/reg/ed25519-dalek/1.0.0-pre.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=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" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2daa1139f89d99630c938e79a5f86dbc119d0049f7134b0b2511642ec8c32a9d
[INFO] running `"docker" "start" "-a" "2daa1139f89d99630c938e79a5f86dbc119d0049f7134b0b2511642ec8c32a9d"`
[INFO] [stderr]    Compiling subtle v2.0.0
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking criterion-plot v0.2.7
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking criterion v0.2.7
[INFO] [stderr] error[E0277]: the trait bound `rngs::jitter::TimerError: std::error::Error` is not satisfied
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.5.5/src/rngs/jitter.rs:269:9
[INFO] [stderr]     |
[INFO] [stderr] 269 |         Error::with_cause(ErrorKind::Unavailable,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ the trait `std::error::Error` is not implemented for `rngs::jitter::TimerError`
[INFO] [stderr]     |
[INFO] [stderr]     = note: required because of the requirements on the impl of `core::convert::From<rngs::jitter::TimerError>` for `alloc::boxed::Box<(dyn std::error::Error + core::marker::Send + core::marker::Sync + 'static)>`
[INFO] [stderr]     = note: required because of the requirements on the impl of `core::convert::Into<alloc::boxed::Box<(dyn std::error::Error + core::marker::Send + core::marker::Sync + 'static)>>` for `rngs::jitter::TimerError`
[INFO] [stderr]     = note: required by `rand_core::Error::with_cause`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `rand`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2daa1139f89d99630c938e79a5f86dbc119d0049f7134b0b2511642ec8c32a9d"`
[INFO] running `"docker" "rm" "-f" "2daa1139f89d99630c938e79a5f86dbc119d0049f7134b0b2511642ec8c32a9d"`
[INFO] [stdout] 2daa1139f89d99630c938e79a5f86dbc119d0049f7134b0b2511642ec8c32a9d