[INFO] fetching crate darktoken 0.0.6...
[INFO] building darktoken-0.0.6 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate darktoken 0.0.6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate darktoken 0.0.6 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6/source/Cargo.toml
[INFO] crate crates.io crate darktoken 0.0.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bls12_381 v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 648f950693377e6fe0f9da96d758b3e3c66f1cabda611e1f7d2321baadebf2a6
[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" "648f950693377e6fe0f9da96d758b3e3c66f1cabda611e1f7d2321baadebf2a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "648f950693377e6fe0f9da96d758b3e3c66f1cabda611e1f7d2321baadebf2a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "648f950693377e6fe0f9da96d758b3e3c66f1cabda611e1f7d2321baadebf2a6", kill_on_drop: false }`
[INFO] [stdout] 648f950693377e6fe0f9da96d758b3e3c66f1cabda611e1f7d2321baadebf2a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09a4d4289f20bc1d579a534d053ac1bd8e3413b45290f5c15264915e2499bcbc
[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" "09a4d4289f20bc1d579a534d053ac1bd8e3413b45290f5c15264915e2499bcbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling subtle v2.2.2
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling bls12_381 v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]    Compiling darktoken v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.33s
[INFO] running `Command { std: "docker" "inspect" "09a4d4289f20bc1d579a534d053ac1bd8e3413b45290f5c15264915e2499bcbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09a4d4289f20bc1d579a534d053ac1bd8e3413b45290f5c15264915e2499bcbc", kill_on_drop: false }`
[INFO] [stdout] 09a4d4289f20bc1d579a534d053ac1bd8e3413b45290f5c15264915e2499bcbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19677a230ff146336654ed8b443b35268348d9e9e3c1f498a70b5a69e5e4d1d7
[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" "19677a230ff146336654ed8b443b35268348d9e9e3c1f498a70b5a69e5e4d1d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling darktoken v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `from_string`
[INFO] [stdout]   --> examples/test.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn from_string(&self, serialized: &str) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `App`, `Arg`, `SubCommand`
[INFO] [stdout]  --> examples/darktoken.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use clap::{App, Arg, SubCommand};
[INFO] [stdout]   |            ^^^  ^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> examples/darktoken.rs:951:5
[INFO] [stdout]     |
[INFO] [stdout] 949 |       return;
[INFO] [stdout]     |       ------ any code following this expression is unreachable
[INFO] [stdout] 950 | 
[INFO] [stdout] 951 | /     let settings = CoconutSettings {
[INFO] [stdout] 952 | |         attributes: 2,
[INFO] [stdout] 953 | |
[INFO] [stdout] 954 | |         threshold: 5,
[INFO] [stdout] 955 | |         total: 7,
[INFO] [stdout] 956 | |     };
[INFO] [stdout]     | |______^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token1`
[INFO] [stdout]    --> examples/darktoken.rs:986:13
[INFO] [stdout]     |
[INFO] [stdout] 986 |         Ok((token1, token2)) => println!("split worked."),
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_token1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token2`
[INFO] [stdout]    --> examples/darktoken.rs:986:21
[INFO] [stdout]     |
[INFO] [stdout] 986 |         Ok((token1, token2)) => println!("split worked."),
[INFO] [stdout]     |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_token2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sign_request`
[INFO] [stdout]    --> examples/darktoken.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let sign_request = self.coconut.make_blind_sign_request(
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sign_request`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deposit_new`
[INFO] [stdout]    --> examples/darktoken.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn deposit_new(&self, value: u64) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CommitProofBuilder`
[INFO] [stdout]    --> examples/darktoken.rs:374:8
[INFO] [stdout]     |
[INFO] [stdout] 374 | struct CommitProofBuilder<'a, R: darktoken::RngInstance> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CommitProof`
[INFO] [stdout]    --> examples/darktoken.rs:392:8
[INFO] [stdout]     |
[INFO] [stdout] 392 | struct CommitProof {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> examples/darktoken.rs:398:8
[INFO] [stdout]     |
[INFO] [stdout] 398 |     fn new(
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `commitments`
[INFO] [stdout]    --> examples/darktoken.rs:412:8
[INFO] [stdout]     |
[INFO] [stdout] 412 |     fn commitments(&self) -> Box<dyn darktoken::ProofCommitments + 'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `finish`
[INFO] [stdout]    --> examples/darktoken.rs:422:8
[INFO] [stdout]     |
[INFO] [stdout] 422 |     fn finish(&self, challenge: &bls::Scalar) -> CommitProof {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `commitments`
[INFO] [stdout]    --> examples/darktoken.rs:441:8
[INFO] [stdout]     |
[INFO] [stdout] 441 |     fn commitments<'a, R: darktoken::RngInstance>(
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> examples/darktoken.rs:779:9
[INFO] [stdout]     |
[INFO] [stdout] 779 |         fs::remove_file(&token_path);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> examples/darktoken.rs:807:13
[INFO] [stdout]     |
[INFO] [stdout] 807 |             fs::remove_file(&token_path);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 30.68s
[INFO] running `Command { std: "docker" "inspect" "19677a230ff146336654ed8b443b35268348d9e9e3c1f498a70b5a69e5e4d1d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19677a230ff146336654ed8b443b35268348d9e9e3c1f498a70b5a69e5e4d1d7", kill_on_drop: false }`
[INFO] [stdout] 19677a230ff146336654ed8b443b35268348d9e9e3c1f498a70b5a69e5e4d1d7
