[INFO] cloning repository https://github.com/Machinalabs/merkle-tree-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Machinalabs/merkle-tree-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMachinalabs%2Fmerkle-tree-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMachinalabs%2Fmerkle-tree-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 74d87f643eb203f64073e9b539979c1996915c44 [INFO] checking Machinalabs/merkle-tree-rs against try#5d96fa0e954d77528204a1ba3b8847ec083c779b for pr-153457 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMachinalabs%2Fmerkle-tree-rs" "/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/Machinalabs/merkle-tree-rs [INFO] finished tweaking git repo https://github.com/Machinalabs/merkle-tree-rs [INFO] tweaked toml for git repo https://github.com/Machinalabs/merkle-tree-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Machinalabs/merkle-tree-rs on toolchain 5d96fa0e954d77528204a1ba3b8847ec083c779b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Machinalabs/merkle-tree-rs 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" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded sha256 v1.5.0 [INFO] [stderr] Downloaded round v0.1.2 [INFO] [stderr] Downloaded rustc-serialize v0.3.25 [INFO] [stderr] Downloaded syn v2.0.57 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 80473fc1a83d02e8c2b55bc4c8dde8cd7d30fca2ac4169457b1f4c9d26840f81 [INFO] running `Command { std: "docker" "start" "-a" "80473fc1a83d02e8c2b55bc4c8dde8cd7d30fca2ac4169457b1f4c9d26840f81", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "80473fc1a83d02e8c2b55bc4c8dde8cd7d30fca2ac4169457b1f4c9d26840f81", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "80473fc1a83d02e8c2b55bc4c8dde8cd7d30fca2ac4169457b1f4c9d26840f81", kill_on_drop: false }` [INFO] [stdout] 80473fc1a83d02e8c2b55bc4c8dde8cd7d30fca2ac4169457b1f4c9d26840f81 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 41df55a3375a618d3918ee76d28332826785dc4ed43c6cfeae64c8e79ddcc06b [INFO] running `Command { std: "docker" "start" "-a" "41df55a3375a618d3918ee76d28332826785dc4ed43c6cfeae64c8e79ddcc06b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling async-trait v0.1.79 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling gcc v0.3.55 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Checking ryu v1.0.17 [INFO] [stderr] Checking tokio v1.37.0 [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Checking round v0.1.2 [INFO] [stderr] Compiling syn v2.0.57 [INFO] [stderr] Checking crypto-common v0.1.6 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Checking sha2 v0.10.8 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking sha256 v1.5.0 [INFO] [stderr] Checking claim_nft v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `pair` is never read [INFO] [stdout] --> src/main.rs:82:22 [INFO] [stdout] | [INFO] [stdout] 82 | let (mut pair, mut next_index): (String, usize) = ("".to_string(), index); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `pair` is never read [INFO] [stdout] --> src/main.rs:97:24 [INFO] [stdout] | [INFO] [stdout] 97 | let mut pair = String::new(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `pair` is never read [INFO] [stdout] --> src/main.rs:82:22 [INFO] [stdout] | [INFO] [stdout] 82 | let (mut pair, mut next_index): (String, usize) = ("".to_string(), index); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `pair` is never read [INFO] [stdout] --> src/main.rs:97:24 [INFO] [stdout] | [INFO] [stdout] 97 | let mut pair = String::new(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/main.rs:202:13 [INFO] [stdout] | [INFO] [stdout] 202 | Err(err) => println!("Merkle not found!"), [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `levels` is never read [INFO] [stdout] --> src/main.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 19 | struct MerkleTree { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 20 | elements: Result>, String>, [INFO] [stdout] 21 | levels: usize, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `MerkleTree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/main.rs:202:13 [INFO] [stdout] | [INFO] [stdout] 202 | Err(err) => println!("Merkle not found!"), [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `levels` is never read [INFO] [stdout] --> src/main.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 19 | struct MerkleTree { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 20 | elements: Result>, String>, [INFO] [stdout] 21 | levels: usize, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `MerkleTree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.56s [INFO] running `Command { std: "docker" "inspect" "41df55a3375a618d3918ee76d28332826785dc4ed43c6cfeae64c8e79ddcc06b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "41df55a3375a618d3918ee76d28332826785dc4ed43c6cfeae64c8e79ddcc06b", kill_on_drop: false }` [INFO] [stdout] 41df55a3375a618d3918ee76d28332826785dc4ed43c6cfeae64c8e79ddcc06b