[INFO] cloning repository https://github.com/tawaren/MultiMerkleTreeProofs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tawaren/MultiMerkleTreeProofs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftawaren%2FMultiMerkleTreeProofs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftawaren%2FMultiMerkleTreeProofs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 96e9ccab70b111cbbb2457397bfdfbfe8bd51f57
[INFO] checking tawaren/MultiMerkleTreeProofs against try#163937523761cc0def32f1ba9ed63fdf65ad3478 for pr-156749
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftawaren%2FMultiMerkleTreeProofs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[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 /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tawaren/MultiMerkleTreeProofs on toolchain 163937523761cc0def32f1ba9ed63fdf65ad3478
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tawaren/MultiMerkleTreeProofs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 2b5c5b34d4a4f43cc95f9f9be1ce679a79378c88c10dc72700a7e19db1e6eab5
[INFO] running `Command { std: "docker" "start" "2b5c5b34d4a4f43cc95f9f9be1ce679a79378c88c10dc72700a7e19db1e6eab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2b5c5b34d4a4f43cc95f9f9be1ce679a79378c88c10dc72700a7e19db1e6eab5" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b5c5b34d4a4f43cc95f9f9be1ce679a79378c88c10dc72700a7e19db1e6eab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2b5c5b34d4a4f43cc95f9f9be1ce679a79378c88c10dc72700a7e19db1e6eab5" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_pcg v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking multi_merkle_proof v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/tree_hash.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/tree_hash.rs:41:26
[INFO] [stdout]    |
[INFO] [stdout] 41 |             indicator &= (indicator-1);
[INFO] [stdout]    |                          ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 41 -             indicator &= (indicator-1);
[INFO] [stdout] 41 +             indicator &= indicator-1 ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::prelude::*`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/tree_hash.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/tree_hash.rs:41:26
[INFO] [stdout]    |
[INFO] [stdout] 41 |             indicator &= (indicator-1);
[INFO] [stdout]    |                          ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 41 -             indicator &= (indicator-1);
[INFO] [stdout] 41 +             indicator &= indicator-1 ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/lib.rs:72:48
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let indices:Vec<_> = sorted.iter().map(|(i,v)|*i).collect();
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:71:45
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let values:Vec<_> = sorted.iter().map(|(i,v)|(*v).clone()).collect();
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/lib.rs:72:48
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let indices:Vec<_> = sorted.iter().map(|(i,v)|*i).collect();
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:71:45
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let values:Vec<_> = sorted.iter().map(|(i,v)|(*v).clone()).collect();
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]    --> src/lib.rs:153:18
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn root_hash(height:u64) -> IndexVirtHash {
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/lib.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |             let val = leaf_hash(index,height);
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `Command { std: "docker" "inspect" "2b5c5b34d4a4f43cc95f9f9be1ce679a79378c88c10dc72700a7e19db1e6eab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b5c5b34d4a4f43cc95f9f9be1ce679a79378c88c10dc72700a7e19db1e6eab5", kill_on_drop: false }`
[INFO] [stdout] 2b5c5b34d4a4f43cc95f9f9be1ce679a79378c88c10dc72700a7e19db1e6eab5
