[INFO] crate merkletree 0.17.1 is already in cache
[INFO] checking merkletree-0.17.1 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate merkletree 0.17.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate merkletree 0.17.1 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate merkletree 0.17.1
[INFO] finished tweaking crates.io crate merkletree 0.17.1
[INFO] tweaked toml for crates.io crate merkletree 0.17.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] 642d71aea11273328b5ec1f20aada4ee87997d6d67e5bb98196464ec79a9a57d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "642d71aea11273328b5ec1f20aada4ee87997d6d67e5bb98196464ec79a9a57d"`
[INFO] [stderr]     Checking positioned-io v0.2.2
[INFO] [stderr]     Checking merkletree v0.17.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:364:9
[INFO] [stderr]     |
[INFO] [stderr] 364 |         { (1048576, 1398101, 11, 2048, 7) };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:386:9
[INFO] [stderr]     |
[INFO] [stderr] 386 |         { (262144, 299593, 7, 262144, 2) };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:703:48
[INFO] [stderr]     |
[INFO] [stderr] 703 |     let (leafs, len, height, num_challenges) = { (16, 21, 3, 16) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:709:48
[INFO] [stderr]     |
[INFO] [stderr] 709 |     let (leafs, len, height, num_challenges) = { (16384, 21845, 8, 16384) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:716:48
[INFO] [stderr]     |
[INFO] [stderr] 716 |     let (leafs, len, height, num_challenges) = { (1073741824, 1431655765, 16, 2048) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:728:48
[INFO] [stderr]     |
[INFO] [stderr] 728 |     let (leafs, len, height, num_challenges) = { (256, 341, 5, 256) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:742:48
[INFO] [stderr]     |
[INFO] [stderr] 742 |     let (leafs, len, height, num_challenges) = { (1048576, 1398101, 11, 2048) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:758:9
[INFO] [stderr]     |
[INFO] [stderr] 758 |         { (1048576, 1398101, 11, 1048576, 5) };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:764:48
[INFO] [stderr]     |
[INFO] [stderr] 764 |     let (leafs, len, height, num_challenges) = { (64, 73, 3, 64) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:770:48
[INFO] [stderr]     |
[INFO] [stderr] 770 |     let (leafs, len, height, num_challenges) = { (16777216, 19173961, 9, 1024) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:776:48
[INFO] [stderr]     |
[INFO] [stderr] 776 |     let (leafs, len, height, num_challenges) = { (2097152, 2396745, 8, 2048) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:788:48
[INFO] [stderr]     |
[INFO] [stderr] 788 |     let (leafs, len, height, num_challenges) = { (2097152, 2396745, 8, 2048) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:804:9
[INFO] [stderr]     |
[INFO] [stderr] 804 |         { (2097152, 2396745, 8, 2048, 3) };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:811:48
[INFO] [stderr]     |
[INFO] [stderr] 811 |     let (leafs, len, height, num_challenges) = { (1073741824, 1227133513, 11, 2048) };
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/test_xor128.rs:825:9
[INFO] [stderr]     |
[INFO] [stderr] 825 |         { (1073741824, 1227133513, 11, 2048, 6) };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.63s
[INFO] running `"docker" "inspect" "642d71aea11273328b5ec1f20aada4ee87997d6d67e5bb98196464ec79a9a57d"`
[INFO] running `"docker" "rm" "-f" "642d71aea11273328b5ec1f20aada4ee87997d6d67e5bb98196464ec79a9a57d"`
[INFO] [stdout] 642d71aea11273328b5ec1f20aada4ee87997d6d67e5bb98196464ec79a9a57d