[INFO] fetching crate rs_merkle 1.1.0...
[INFO] checking rs_merkle-1.1.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate rs_merkle 1.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rs_merkle 1.1.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rs_merkle 1.1.0
[INFO] finished tweaking crates.io crate rs_merkle 1.1.0
[INFO] tweaked toml for crates.io crate rs_merkle 1.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 629e6a65e60ac2e46188e2785a08f2fc2fdb046c4198e5df79e4ceca94b82db4
[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" "629e6a65e60ac2e46188e2785a08f2fc2fdb046c4198e5df79e4ceca94b82db4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "629e6a65e60ac2e46188e2785a08f2fc2fdb046c4198e5df79e4ceca94b82db4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "629e6a65e60ac2e46188e2785a08f2fc2fdb046c4198e5df79e4ceca94b82db4", kill_on_drop: false }`
[INFO] [stdout] 629e6a65e60ac2e46188e2785a08f2fc2fdb046c4198e5df79e4ceca94b82db4
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1acb5e0f339d1ac656cd986ed09b7821ac72c78657abf9230c39e7d688aa4fb1
[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" "1acb5e0f339d1ac656cd986ed09b7821ac72c78657abf9230c39e7d688aa4fb1", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking rs_merkle v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]  --> tests/merkle_proof_test.rs:6:48
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use rs_merkle::{algorithms::Sha256, Error, Hasher, MerkleTree};
[INFO] [stdout]   |                                                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common`
[INFO] [stdout]    --> tests/merkle_proof_test.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     use crate::common;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]   --> tests/merkle_tree_test.rs:59:41
[INFO] [stdout]    |
[INFO] [stdout] 59 |     use rs_merkle::{algorithms::Sha256, Error, Hasher, MerkleTree};
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common`
[INFO] [stdout]    --> tests/merkle_tree_test.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 189 |     use crate::common;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `combine`
[INFO] [stdout]   --> tests/common.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn combine<T: Clone>(active: Vec<T>, rest: Vec<T>, mut combinations: Vec<Vec<T>>) -> Vec<Vec<T>> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `combinations`
[INFO] [stdout]   --> tests/common.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn combinations<T: Clone>(vec: Vec<T>) -> Vec<Vec<T>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> tests/common.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn new(leaf_hashes_to_prove: Vec<[u8; 32]>, leaf_indices_to_prove: Vec<usize>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `setup_proof_test_cases`
[INFO] [stdout]   --> tests/common.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn setup_proof_test_cases() -> Vec<ProofTestCases> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.38s
[INFO] running `Command { std: "docker" "inspect" "1acb5e0f339d1ac656cd986ed09b7821ac72c78657abf9230c39e7d688aa4fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1acb5e0f339d1ac656cd986ed09b7821ac72c78657abf9230c39e7d688aa4fb1", kill_on_drop: false }`
[INFO] [stdout] 1acb5e0f339d1ac656cd986ed09b7821ac72c78657abf9230c39e7d688aa4fb1