[INFO] crate grin_core 3.0.0 is already in cache
[INFO] checking grin_core-3.0.0 against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] extracting crate grin_core 3.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate grin_core 3.0.0 on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate grin_core 3.0.0
[INFO] finished tweaking crates.io crate grin_core 3.0.0
[INFO] tweaked toml for crates.io crate grin_core 3.0.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "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] d9fc89d2219adb301a4cdd80e0a2a8a1ea1963b80a58ce735fdca009d7ba4964
[INFO] running `"docker" "start" "-a" "d9fc89d2219adb301a4cdd80e0a2a8a1ea1963b80a58ce735fdca009d7ba4964"`
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking serde_json v1.0.46
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking pbkdf2 v0.2.3
[INFO] [stderr]    Compiling bindgen v0.37.4
[INFO] [stderr]     Checking num-rational v0.2.3
[INFO] [stderr]     Checking grin_secp256k1zkp v0.7.7
[INFO] [stderr]     Checking log4rs v0.8.3
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking grin_util v3.0.0
[INFO] [stderr]     Checking grin_keychain v3.0.0
[INFO] [stderr]    Compiling croaring-sys v0.3.9
[INFO] [stderr]     Checking croaring v0.3.9
[INFO] [stderr]     Checking grin_core v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 (HeaderVersion(1))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |                 (HeaderVersion(2))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:155:5
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 (HeaderVersion(3))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:162:5
[INFO] [stderr]     |
[INFO] [stderr] 162 |                 (HeaderVersion(1))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 164 |                 (HeaderVersion(2))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |                 (HeaderVersion(3))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/core/committed.rs:127:14
[INFO] [stderr]     |
[INFO] [stderr] 127 |     ) -> Result<((Commitment, Commitment)), Error> {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 (HeaderVersion(1))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |                 (HeaderVersion(2))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:155:5
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 (HeaderVersion(3))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:162:5
[INFO] [stderr]     |
[INFO] [stderr] 162 |                 (HeaderVersion(1))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 164 |                 (HeaderVersion(2))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/consensus.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |                 (HeaderVersion(3))
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/core/committed.rs:127:14
[INFO] [stderr]     |
[INFO] [stderr] 127 |     ) -> Result<((Commitment, Commitment)), Error> {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 53s
[INFO] running `"docker" "inspect" "d9fc89d2219adb301a4cdd80e0a2a8a1ea1963b80a58ce735fdca009d7ba4964"`
[INFO] running `"docker" "rm" "-f" "d9fc89d2219adb301a4cdd80e0a2a8a1ea1963b80a58ce735fdca009d7ba4964"`
[INFO] [stdout] d9fc89d2219adb301a4cdd80e0a2a8a1ea1963b80a58ce735fdca009d7ba4964