[INFO] fetching crate libsecp256k1-rs 0.2.4...
[INFO] checking libsecp256k1-rs-0.2.4 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate libsecp256k1-rs 0.2.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate libsecp256k1-rs 0.2.4 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libsecp256k1-rs 0.2.4
[INFO] finished tweaking crates.io crate libsecp256k1-rs 0.2.4
[INFO] tweaked toml for crates.io crate libsecp256k1-rs 0.2.4 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 476081819b34652c83d57db3f0ab2dec33e57ed72d7b0cf8d8354094b0f1fdf2
[INFO] running `Command { std: "docker" "start" "-a" "476081819b34652c83d57db3f0ab2dec33e57ed72d7b0cf8d8354094b0f1fdf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "476081819b34652c83d57db3f0ab2dec33e57ed72d7b0cf8d8354094b0f1fdf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "476081819b34652c83d57db3f0ab2dec33e57ed72d7b0cf8d8354094b0f1fdf2", kill_on_drop: false }`
[INFO] [stdout] 476081819b34652c83d57db3f0ab2dec33e57ed72d7b0cf8d8354094b0f1fdf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] dc8aada1b77e05b93bd960e27f2d62972943b1cd4514195ddc105e541e00e50f
[INFO] running `Command { std: "docker" "start" "-a" "dc8aada1b77e05b93bd960e27f2d62972943b1cd4514195ddc105e541e00e50f", kill_on_drop: false }`
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking odds v0.2.26
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]    Compiling secp256k1-test v0.7.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking generic-array v0.8.3
[INFO] [stderr]     Checking arrayvec v0.3.25
[INFO] [stderr]     Checking digest v0.6.2
[INFO] [stderr]     Checking crypto-mac v0.4.0
[INFO] [stderr]     Checking block-buffer v0.2.0
[INFO] [stderr]     Checking hmac v0.4.2
[INFO] [stderr]     Checking sha2 v0.6.0
[INFO] [stderr]     Checking hmac-drbg v0.1.2
[INFO] [stderr]     Checking libsecp256k1-rs v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/schnorr/challenge.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new(keys: &[&Combinable]) -> Challenge {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: use `dyn`: `dyn Combinable`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/secp256k1/keys.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |         write!(f, "{}", self.to_hex(true));
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `secp256k1`
[INFO] [stdout]  --> benches/public_key.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use secp256k1::PublicKey;
[INFO] [stdout]   |     ^^^^^^^^^ maybe a missing crate `secp256k1`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libsecp256k1-rs`.
[INFO] [stdout] error[E0432]: unresolved import `secp256k1`
[INFO] [stdout]   --> benches/sign.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use secp256k1::{sign, Message, SecretKey};
[INFO] [stdout]    |     ^^^^^^^^^ maybe a missing crate `secp256k1`?
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `secp256k1`
[INFO] [stdout]  --> benches/signature.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use secp256k1::Signature;
[INFO] [stdout]   |     ^^^^^^^^^ maybe a missing crate `secp256k1`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/schnorr/challenge.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new(keys: &[&Combinable]) -> Challenge {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: use `dyn`: `dyn Combinable`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/secp256k1/keys.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |         write!(f, "{}", self.to_hex(true));
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "dc8aada1b77e05b93bd960e27f2d62972943b1cd4514195ddc105e541e00e50f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc8aada1b77e05b93bd960e27f2d62972943b1cd4514195ddc105e541e00e50f", kill_on_drop: false }`
[INFO] [stdout] dc8aada1b77e05b93bd960e27f2d62972943b1cd4514195ddc105e541e00e50f