[INFO] cloning repository https://github.com/quilt/utxo-relayer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quilt/utxo-relayer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquilt%2Futxo-relayer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquilt%2Futxo-relayer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c82616392445043669c7d12c33f062dec36a5d10
[INFO] testing quilt/utxo-relayer against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquilt%2Futxo-relayer" "/workspace/builds/worker-63/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-63/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quilt/utxo-relayer on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-63/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/quilt/utxo-relayer
[INFO] finished tweaking git repo https://github.com/quilt/utxo-relayer
[INFO] tweaked toml for git repo https://github.com/quilt/utxo-relayer written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] crate git repo https://github.com/quilt/utxo-relayer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Updating git repository `https://github.com/gakonst/ethers-rs`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3b8f25b84f8f20ccc4dc5eada129e4338f15f555731be6e44f457229925c454
[INFO] running `Command { std: "docker" "start" "-a" "a3b8f25b84f8f20ccc4dc5eada129e4338f15f555731be6e44f457229925c454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3b8f25b84f8f20ccc4dc5eada129e4338f15f555731be6e44f457229925c454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3b8f25b84f8f20ccc4dc5eada129e4338f15f555731be6e44f457229925c454", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 217e99117460681c9ef01574b9fb7a1f3cb1846220c5b568fe3cfab5013d31f1
[INFO] running `Command { std: "docker" "start" "-a" "217e99117460681c9ef01574b9fb7a1f3cb1846220c5b568fe3cfab5013d31f1", kill_on_drop: false }`
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[INFO] [stderr]    Compiling parity-scale-codec v1.3.4
[INFO] [stderr]    Compiling impl-serde v0.3.1
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[INFO] [stderr]    Compiling serde-aux v0.6.1
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[INFO] [stderr]    Compiling primitive-types v0.7.2
[INFO] [stderr]    Compiling ethereum-types v0.9.2
[INFO] [stderr]    Compiling ethabi-next v12.0.1
[INFO] [stderr]    Compiling hyper-rustls v0.21.0
[INFO] [stderr]    Compiling ethers-core v0.1.3 (https://github.com/gakonst/ethers-rs?rev=6197d8bb1275b1630ffe055815784ac86bb5cbe9#6197d8bb)
[INFO] [stderr]    Compiling reqwest v0.10.7
[INFO] [stderr]    Compiling ethers-contract-abigen v0.1.3 (https://github.com/gakonst/ethers-rs?rev=6197d8bb1275b1630ffe055815784ac86bb5cbe9#6197d8bb)
[INFO] [stderr]    Compiling ethers-providers v0.1.3 (https://github.com/gakonst/ethers-rs?rev=6197d8bb1275b1630ffe055815784ac86bb5cbe9#6197d8bb)
[INFO] [stderr]    Compiling ethers-contract-derive v0.1.3 (https://github.com/gakonst/ethers-rs?rev=6197d8bb1275b1630ffe055815784ac86bb5cbe9#6197d8bb)
[INFO] [stderr]    Compiling ethers-signers v0.1.3 (https://github.com/gakonst/ethers-rs?rev=6197d8bb1275b1630ffe055815784ac86bb5cbe9#6197d8bb)
[INFO] [stderr]    Compiling ethers-contract v0.1.3 (https://github.com/gakonst/ethers-rs?rev=6197d8bb1275b1630ffe055815784ac86bb5cbe9#6197d8bb)
[INFO] [stderr]    Compiling ethers v0.1.3 (https://github.com/gakonst/ethers-rs?rev=6197d8bb1275b1630ffe055815784ac86bb5cbe9#6197d8bb)
[INFO] [stderr]    Compiling relayer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/pool.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `replace`
[INFO] [stdout]    --> src/pool.rs:169:12
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn replace(&mut self, item: T) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `split`
[INFO] [stdout]    --> src/pool.rs:268:12
[INFO] [stdout]     |
[INFO] [stdout] 268 |     pub fn split(self) -> (Deposit, U256) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `max_len`
[INFO] [stdout]    --> src/pool.rs:275:5
[INFO] [stdout]     |
[INFO] [stdout] 275 |     max_len: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `DepositPool` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/pool.rs:273:10
[INFO] [stdout]     |
[INFO] [stdout] 273 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `by_id`
[INFO] [stdout]    --> src/pool.rs:276:5
[INFO] [stdout]     |
[INFO] [stdout] 276 |     by_id: HashMap<U256, Arc<Identified>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `DepositPool` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/pool.rs:273:10
[INFO] [stdout]     |
[INFO] [stdout] 273 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]    --> src/pool.rs:297:12
[INFO] [stdout]     |
[INFO] [stdout] 297 |     pub fn insert(&mut self, item: Identified) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `id`
[INFO] [stdout]    --> src/ui.rs:197:12
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn id(&self) -> u8 {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `print_thread`
[INFO] [stdout]    --> src/ui.rs:208:5
[INFO] [stdout]     |
[INFO] [stdout] 208 |     print_thread: JoinHandle<()>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Ui` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/ui.rs:206:10
[INFO] [stdout]     |
[INFO] [stdout] 206 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `read_thread`
[INFO] [stdout]    --> src/ui.rs:209:5
[INFO] [stdout]     |
[INFO] [stdout] 209 |     read_thread: JoinHandle<()>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Ui` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/ui.rs:206:10
[INFO] [stdout]     |
[INFO] [stdout] 206 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(map_first_last)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `relayer` due to 2 previous errors; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "217e99117460681c9ef01574b9fb7a1f3cb1846220c5b568fe3cfab5013d31f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "217e99117460681c9ef01574b9fb7a1f3cb1846220c5b568fe3cfab5013d31f1", kill_on_drop: false }`
[INFO] [stdout] 217e99117460681c9ef01574b9fb7a1f3cb1846220c5b568fe3cfab5013d31f1