[INFO] updating cached repository https://github.com/tawaren/MultiMerkleTreeProofs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 96e9ccab70b111cbbb2457397bfdfbfe8bd51f57
[INFO] testing tawaren/MultiMerkleTreeProofs against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftawaren%2FMultiMerkleTreeProofs" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tawaren/MultiMerkleTreeProofs on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tawaren/MultiMerkleTreeProofs
[INFO] finished tweaking git repo https://github.com/tawaren/MultiMerkleTreeProofs
[INFO] tweaked toml for git repo https://github.com/tawaren/MultiMerkleTreeProofs written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tawaren/MultiMerkleTreeProofs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 88aca6698470327208c8ec72d97d7de85ff1b79f6b9d20a86c0ce8f4f9b91cc7
[INFO] running `"docker" "start" "-a" "88aca6698470327208c8ec72d97d7de85ff1b79f6b9d20a86c0ce8f4f9b91cc7"`
[INFO] [stderr]    Compiling multi_merkle_proof v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/tree_hash.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/tree_hash.rs:41:26
[INFO] [stderr]    |
[INFO] [stderr] 41 |             indicator &= (indicator-1);
[INFO] [stderr]    |                          ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::prelude::*`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lib.rs:71:45
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let values:Vec<_> = sorted.iter().map(|(i,v)|(*v).clone()).collect();
[INFO] [stderr]    |                                             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/lib.rs:72:48
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let indices:Vec<_> = sorted.iter().map(|(i,v)|*i).collect();
[INFO] [stderr]    |                                                ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/tree_hash.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 19 |         self.0[level] = match &self.0[level] {
[INFO] [stderr]    |                                ------ immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 23 |                 if !self.push_node( level+1, existing.hash_merge(node)) { return false; }
[INFO] [stderr]    |                     ^^^^                     -------- immutable borrow later used here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "88aca6698470327208c8ec72d97d7de85ff1b79f6b9d20a86c0ce8f4f9b91cc7"`
[INFO] running `"docker" "rm" "-f" "88aca6698470327208c8ec72d97d7de85ff1b79f6b9d20a86c0ce8f4f9b91cc7"`
[INFO] [stdout] 88aca6698470327208c8ec72d97d7de85ff1b79f6b9d20a86c0ce8f4f9b91cc7
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3b028e479a35db8b26d99fa99034c2ba78eb48cd69f2f168c9318f6a9aa250b8
[INFO] running `"docker" "start" "-a" "3b028e479a35db8b26d99fa99034c2ba78eb48cd69f2f168c9318f6a9aa250b8"`
[INFO] [stderr]    Compiling multi_merkle_proof v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/tree_hash.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/tree_hash.rs:41:26
[INFO] [stderr]    |
[INFO] [stderr] 41 |             indicator &= (indicator-1);
[INFO] [stderr]    |                          ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lib.rs:71:45
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let values:Vec<_> = sorted.iter().map(|(i,v)|(*v).clone()).collect();
[INFO] [stderr]    |                                             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/lib.rs:72:48
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let indices:Vec<_> = sorted.iter().map(|(i,v)|*i).collect();
[INFO] [stderr]    |                                                ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]    --> src/lib.rs:153:18
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn root_hash(height:u64) -> IndexVirtHash {
[INFO] [stderr]     |                  ^^^^^^ help: consider prefixing with an underscore: `_height`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]    --> src/lib.rs:167:17
[INFO] [stderr]     |
[INFO] [stderr] 167 |             let val = leaf_hash(index,height);
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/tree_hash.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 19 |         self.0[level] = match &self.0[level] {
[INFO] [stderr]    |                                ------ immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 23 |                 if !self.push_node( level+1, existing.hash_merge(node)) { return false; }
[INFO] [stderr]    |                     ^^^^                     -------- immutable borrow later used here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "3b028e479a35db8b26d99fa99034c2ba78eb48cd69f2f168c9318f6a9aa250b8"`
[INFO] running `"docker" "rm" "-f" "3b028e479a35db8b26d99fa99034c2ba78eb48cd69f2f168c9318f6a9aa250b8"`
[INFO] [stdout] 3b028e479a35db8b26d99fa99034c2ba78eb48cd69f2f168c9318f6a9aa250b8
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] eb726dddbec578f7c0eaa2fa796906b39b814280de7bd12dbefb6a79a80e9334
[INFO] running `"docker" "start" "-a" "eb726dddbec578f7c0eaa2fa796906b39b814280de7bd12dbefb6a79a80e9334"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/multi_merkle_proof-be941865e1ae1125
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test::test_single_same_elem ... ok
[INFO] [stdout] test test::test_right_most ... ok
[INFO] [stdout] test test::test_single ... ok
[INFO] [stdout] test test::test_left_most ... ok
[INFO] [stdout] test test::test_many ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests multi_merkle_proof
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "eb726dddbec578f7c0eaa2fa796906b39b814280de7bd12dbefb6a79a80e9334"`
[INFO] running `"docker" "rm" "-f" "eb726dddbec578f7c0eaa2fa796906b39b814280de7bd12dbefb6a79a80e9334"`
[INFO] [stdout] eb726dddbec578f7c0eaa2fa796906b39b814280de7bd12dbefb6a79a80e9334