[INFO] crate qp-trie 0.7.5 is already in cache
[INFO] checking qp-trie-0.7.5 against master#74e80468347471779be6060d8d7d6d04e98e467f for pr-72788
[INFO] extracting crate qp-trie 0.7.5 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate qp-trie 0.7.5 on toolchain 74e80468347471779be6060d8d7d6d04e98e467f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate qp-trie 0.7.5
[INFO] finished tweaking crates.io crate qp-trie 0.7.5
[INFO] tweaked toml for crates.io crate qp-trie 0.7.5 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+74e80468347471779be6060d8d7d6d04e98e467f" "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] ceed4325199f557c533900070401eaa751a3b14524858cd82080e11f9ab41a76
[INFO] running `"docker" "start" "-a" "ceed4325199f557c533900070401eaa751a3b14524858cd82080e11f9ab41a76"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking qp-trie v0.7.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking debug_unreachable v0.1.1
[INFO] [stderr]     Checking qptrie v0.2.4
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/node.rs:495:21
[INFO] [stderr]     |
[INFO] [stderr] 495 |                     mem::replace(self, Node::Branch(branch));
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/node.rs:606:21
[INFO] [stderr]     |
[INFO] [stderr] 606 |                     mem::replace(self, node);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/node.rs:669:21
[INFO] [stderr]     |
[INFO] [stderr] 669 |                     mem::replace(self, node);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/node.rs:495:21
[INFO] [stderr]     |
[INFO] [stderr] 495 |                     mem::replace(self, Node::Branch(branch));
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/node.rs:606:21
[INFO] [stderr]     |
[INFO] [stderr] 606 |                     mem::replace(self, node);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/node.rs:669:21
[INFO] [stderr]     |
[INFO] [stderr] 669 |                     mem::replace(self, node);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.85s
[INFO] running `"docker" "inspect" "ceed4325199f557c533900070401eaa751a3b14524858cd82080e11f9ab41a76"`
[INFO] running `"docker" "rm" "-f" "ceed4325199f557c533900070401eaa751a3b14524858cd82080e11f9ab41a76"`
[INFO] [stdout] ceed4325199f557c533900070401eaa751a3b14524858cd82080e11f9ab41a76