[INFO] crate darktoken 0.0.6 is already in cache
[INFO] checking darktoken-0.0.6 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate darktoken 0.0.6 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate darktoken 0.0.6 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate darktoken 0.0.6
[INFO] finished tweaking crates.io crate darktoken 0.0.6
[INFO] tweaked toml for crates.io crate darktoken 0.0.6 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate darktoken 0.0.6 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 17476cfb0df7bba2754e8ee6337b21457a01dfff1e2fa83effb8b08a6216910e
[INFO] running `"docker" "start" "-a" "17476cfb0df7bba2754e8ee6337b21457a01dfff1e2fa83effb8b08a6216910e"`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking bls12_381 v0.1.1
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking darktoken v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr] warning: method is never used: `from_string`
[INFO] [stderr]   --> examples/test.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn from_string(&self, serialized: &str) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `App`, `Arg`, `SubCommand`
[INFO] [stderr]  --> examples/darktoken.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | use clap::{App, Arg, SubCommand};
[INFO] [stderr]   |            ^^^  ^^^  ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> examples/darktoken.rs:951:5
[INFO] [stderr]     |
[INFO] [stderr] 949 |       return;
[INFO] [stderr]     |       ------ any code following this expression is unreachable
[INFO] [stderr] 950 | 
[INFO] [stderr] 951 | /     let settings = CoconutSettings {
[INFO] [stderr] 952 | |         attributes: 2,
[INFO] [stderr] 953 | |
[INFO] [stderr] 954 | |         threshold: 5,
[INFO] [stderr] 955 | |         total: 7,
[INFO] [stderr] 956 | |     };
[INFO] [stderr]     | |______^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token1`
[INFO] [stderr]    --> examples/darktoken.rs:986:13
[INFO] [stderr]     |
[INFO] [stderr] 986 |         Ok((token1, token2)) => println!("split worked."),
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_token1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token2`
[INFO] [stderr]    --> examples/darktoken.rs:986:21
[INFO] [stderr]     |
[INFO] [stderr] 986 |         Ok((token1, token2)) => println!("split worked."),
[INFO] [stderr]     |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_token2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sign_request`
[INFO] [stderr]    --> examples/darktoken.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |         let sign_request = self.coconut.make_blind_sign_request(
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sign_request`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `deposit_new`
[INFO] [stderr]    --> examples/darktoken.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn deposit_new(&self, value: u64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CommitProofBuilder`
[INFO] [stderr]    --> examples/darktoken.rs:374:8
[INFO] [stderr]     |
[INFO] [stderr] 374 | struct CommitProofBuilder<'a, R: darktoken::RngInstance> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CommitProof`
[INFO] [stderr]    --> examples/darktoken.rs:392:8
[INFO] [stderr]     |
[INFO] [stderr] 392 | struct CommitProof {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> examples/darktoken.rs:398:5
[INFO] [stderr]     |
[INFO] [stderr] 398 | /     fn new(
[INFO] [stderr] 399 | |         params: &'a darktoken::Parameters<R>,
[INFO] [stderr] 400 | |         value: &'a bls::Scalar,
[INFO] [stderr] 401 | |         blind: &'a bls::Scalar,
[INFO] [stderr] ...   |
[INFO] [stderr] 409 | |         }
[INFO] [stderr] 410 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `commitments`
[INFO] [stderr]    --> examples/darktoken.rs:412:5
[INFO] [stderr]     |
[INFO] [stderr] 412 |     fn commitments(&self) -> Box<dyn darktoken::ProofCommitments + 'a> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `finish`
[INFO] [stderr]    --> examples/darktoken.rs:422:5
[INFO] [stderr]     |
[INFO] [stderr] 422 |     fn finish(&self, challenge: &bls::Scalar) -> CommitProof {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `commitments`
[INFO] [stderr]    --> examples/darktoken.rs:441:5
[INFO] [stderr]     |
[INFO] [stderr] 441 | /     fn commitments<'a, R: darktoken::RngInstance>(
[INFO] [stderr] 442 | |         &self,
[INFO] [stderr] 443 | |         params: &'a darktoken::Parameters<R>,
[INFO] [stderr] 444 | |         challenge: &bls::Scalar,
[INFO] [stderr] ...   |
[INFO] [stderr] 455 | |         })
[INFO] [stderr] 456 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> examples/darktoken.rs:779:9
[INFO] [stderr]     |
[INFO] [stderr] 779 |         fs::remove_file(&token_path);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> examples/darktoken.rs:807:13
[INFO] [stderr]     |
[INFO] [stderr] 807 |             fs::remove_file(&token_path);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.64s
[INFO] running `"docker" "inspect" "17476cfb0df7bba2754e8ee6337b21457a01dfff1e2fa83effb8b08a6216910e"`
[INFO] running `"docker" "rm" "-f" "17476cfb0df7bba2754e8ee6337b21457a01dfff1e2fa83effb8b08a6216910e"`
[INFO] [stdout] 17476cfb0df7bba2754e8ee6337b21457a01dfff1e2fa83effb8b08a6216910e
