[INFO] fetching crate salty 0.1.0-alpha.0...
[INFO] checking salty-0.1.0-alpha.0 against master#db870ea71b6dcc7a91b999420b88f41d3cdd13e1 for pr-75192
[INFO] extracting crate salty 0.1.0-alpha.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate salty 0.1.0-alpha.0 on toolchain db870ea71b6dcc7a91b999420b88f41d3cdd13e1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate salty 0.1.0-alpha.0
[INFO] finished tweaking crates.io crate salty 0.1.0-alpha.0
[INFO] tweaked toml for crates.io crate salty 0.1.0-alpha.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f91e03d5c151899e36c83c30237204bde0574c3e249cdc9a5994062cb1e055fd
[INFO] running `Command { std: "docker" "start" "-a" "f91e03d5c151899e36c83c30237204bde0574c3e249cdc9a5994062cb1e055fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f91e03d5c151899e36c83c30237204bde0574c3e249cdc9a5994062cb1e055fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91e03d5c151899e36c83c30237204bde0574c3e249cdc9a5994062cb1e055fd", kill_on_drop: false }`
[INFO] [stdout] f91e03d5c151899e36c83c30237204bde0574c3e249cdc9a5994062cb1e055fd
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98adca48bd6b654432e2898e60be742a2c18f3ac0e0d7c2bf46c75e66568c9e4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "98adca48bd6b654432e2898e60be742a2c18f3ac0e0d7c2bf46c75e66568c9e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling salty v0.1.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking subtle v2.2.3
[INFO] [stdout] error: Please select exactly one of the available field implementation features:
[INFO] [stdout]   - tweetnacl
[INFO] [stdout]   - haase
[INFO] [stdout]    --> src/lib.rs:174:1
[INFO] [stdout]     |
[INFO] [stdout] 174 | / compile_error!("Please select exactly one of the available field implementation features:
[INFO] [stdout] 175 | |   - tweetnacl
[INFO] [stdout] 176 | |   - haase");
[INFO] [stdout]     | |____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0204]: the trait `Copy` may not be implemented for this type
[INFO] [stdout]   --> src/curve.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[derive(Clone,Copy,Debug,Default)]
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     [FieldElement; 4]
[INFO] [stdout]    |     ----------------- this field does not implement `Copy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0204`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `salty`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "98adca48bd6b654432e2898e60be742a2c18f3ac0e0d7c2bf46c75e66568c9e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98adca48bd6b654432e2898e60be742a2c18f3ac0e0d7c2bf46c75e66568c9e4", kill_on_drop: false }`
[INFO] [stdout] 98adca48bd6b654432e2898e60be742a2c18f3ac0e0d7c2bf46c75e66568c9e4