[INFO] crate ed25519-dalek 1.0.0-pre.2 is already in cache
[INFO] checking ed25519-dalek-1.0.0-pre.2 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate ed25519-dalek 1.0.0-pre.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ed25519-dalek 1.0.0-pre.2 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ed25519-dalek 1.0.0-pre.2
[INFO] finished tweaking crates.io crate ed25519-dalek 1.0.0-pre.2
[INFO] tweaked toml for crates.io crate ed25519-dalek 1.0.0-pre.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c5c720f143b4e3c265da92a2b6bd4dda9058dfd1c8be864e78b3e8dc037c3d19
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c5c720f143b4e3c265da92a2b6bd4dda9058dfd1c8be864e78b3e8dc037c3d19"`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling subtle v2.2.2
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling curve25519-dalek v1.2.3
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused extern crate
[INFO] [stderr]    --> src/lib.rs:266:1
[INFO] [stderr]     |
[INFO] [stderr] 265 | / #[cfg(any(feature = "std", test))]
[INFO] [stderr] 266 | | extern crate rand_os;
[INFO] [stderr]     | | ^^^^^^^^^^^^^^^^^^^^-
[INFO] [stderr]     | |_____________________|
[INFO] [stderr]     |                       help: remove it
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:251:9
[INFO] [stderr]     |
[INFO] [stderr] 251 | #![warn(rust_2018_idioms)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     = note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stderr] 
[INFO] [stderr] warning: unused extern crate
[INFO] [stderr]    --> src/lib.rs:266:1
[INFO] [stderr]     |
[INFO] [stderr] 265 | / #[cfg(any(feature = "std", test))]
[INFO] [stderr] 266 | | extern crate rand_os;
[INFO] [stderr]     | | ^^^^^^^^^^^^^^^^^^^^-
[INFO] [stderr]     | |_____________________|
[INFO] [stderr]     |                       help: remove it
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:251:9
[INFO] [stderr]     |
[INFO] [stderr] 251 | #![warn(rust_2018_idioms)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     = note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `ed25519_dalek::verify_batch`
[INFO] [stderr]   --> benches/ed25519_benchmarks.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     use ed25519_dalek::verify_batch;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `verify_batch` in the root
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `ed25519-dalek`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c5c720f143b4e3c265da92a2b6bd4dda9058dfd1c8be864e78b3e8dc037c3d19"`
[INFO] running `"docker" "rm" "-f" "c5c720f143b4e3c265da92a2b6bd4dda9058dfd1c8be864e78b3e8dc037c3d19"`
[INFO] [stdout] c5c720f143b4e3c265da92a2b6bd4dda9058dfd1c8be864e78b3e8dc037c3d19