[INFO] fetching crate libsecp256k1 0.3.5...
[INFO] checking libsecp256k1-0.3.5 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate libsecp256k1 0.3.5 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate libsecp256k1 0.3.5 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libsecp256k1 0.3.5
[INFO] finished tweaking crates.io crate libsecp256k1 0.3.5
[INFO] tweaked toml for crates.io crate libsecp256k1 0.3.5 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0db435475df19796853d4b9ae89da072bd344b57d930c7a027e443274c57e65a
[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" "0db435475df19796853d4b9ae89da072bd344b57d930c7a027e443274c57e65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0db435475df19796853d4b9ae89da072bd344b57d930c7a027e443274c57e65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0db435475df19796853d4b9ae89da072bd344b57d930c7a027e443274c57e65a", kill_on_drop: false }`
[INFO] [stdout] 0db435475df19796853d4b9ae89da072bd344b57d930c7a027e443274c57e65a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "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] ab1d3dce35089b88016fad462d263513dbcbb734024a07dabae0dee08779bca2
[INFO] running `Command { std: "docker" "start" "-a" "ab1d3dce35089b88016fad462d263513dbcbb734024a07dabae0dee08779bca2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling secp256k1-test v0.7.2
[INFO] [stderr]    Compiling hex-literal-impl v0.2.2
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking hmac-drbg v0.2.0
[INFO] [stderr]     Checking hex-literal v0.2.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling clear_on_drop v0.2.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking libsecp256k1 v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `ThreadRng: rand::Rng` is not satisfied
[INFO] [stdout]   --> benches/sign.rs:19:56
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let (secp_privkey, _) = secp256k1.generate_keypair(&mut thread_rng()).unwrap();
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^ the trait `rand::Rng` is not implemented for `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for tuple `(secp256k1::Signature, secp256k1::RecoveryId)` in the current scope
[INFO] [stdout]   --> benches/sign.rs:23:41
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = sign(&message, &seckey).unwrap();
[INFO] [stdout]    |                                         ^^^^^^ method not found in `(secp256k1::Signature, secp256k1::RecoveryId)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libsecp256k1`
[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[E0277]: the trait bound `ThreadRng: rand::Rng` is not satisfied
[INFO] [stdout]   --> benches/public_key.rs:16:55
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let (_, secp_pubkey) = secp256k1.generate_keypair(&mut thread_rng()).unwrap();
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^ the trait `rand::Rng` is not implemented for `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ThreadRng: rand::Rng` is not satisfied
[INFO] [stdout]   --> benches/public_key.rs:29:55
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let (_, secp_pubkey) = secp256k1.generate_keypair(&mut thread_rng()).unwrap();
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^ the trait `rand::Rng` is not implemented for `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ThreadRng: rand::Rng` is not satisfied
[INFO] [stdout]   --> benches/public_key.rs:43:55
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let (_, secp_pubkey) = secp256k1.generate_keypair(&mut thread_rng()).unwrap();
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^ the trait `rand::Rng` is not implemented for `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ThreadRng: rand::Rng` is not satisfied
[INFO] [stdout]   --> benches/signature.rs:17:51
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let (privkey, _) = secp256k1.generate_keypair(&mut thread_rng()).unwrap();
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^ the trait `rand::Rng` is not implemented for `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ThreadRng: rand::Rng` is not satisfied
[INFO] [stdout]   --> benches/signature.rs:34:51
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let (privkey, _) = secp256k1.generate_keypair(&mut thread_rng()).unwrap();
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^ the trait `rand::Rng` is not implemented for `ThreadRng`
[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 E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ab1d3dce35089b88016fad462d263513dbcbb734024a07dabae0dee08779bca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab1d3dce35089b88016fad462d263513dbcbb734024a07dabae0dee08779bca2", kill_on_drop: false }`
[INFO] [stdout] ab1d3dce35089b88016fad462d263513dbcbb734024a07dabae0dee08779bca2