[INFO] fetching crate span 0.2.0...
[INFO] testing span-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate span 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate span 0.2.0
[INFO] finished tweaking crates.io crate span 0.2.0
[INFO] tweaked toml for crates.io crate span 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate span 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate span 0.2.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 462b03b2b45d6e7ef65e3d6be79777ab43ef8a41bfbc29b1ea17b303a8b81101
[INFO] running `Command { std: "docker" "start" "-a" "462b03b2b45d6e7ef65e3d6be79777ab43ef8a41bfbc29b1ea17b303a8b81101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "462b03b2b45d6e7ef65e3d6be79777ab43ef8a41bfbc29b1ea17b303a8b81101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "462b03b2b45d6e7ef65e3d6be79777ab43ef8a41bfbc29b1ea17b303a8b81101", kill_on_drop: false }`
[INFO] [stdout] 462b03b2b45d6e7ef65e3d6be79777ab43ef8a41bfbc29b1ea17b303a8b81101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e809dd044a320b993197b887a75df1fbd058208e9e55b69c73c0191ebba021c
[INFO] running `Command { std: "docker" "start" "-a" "9e809dd044a320b993197b887a75df1fbd058208e9e55b69c73c0191ebba021c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling span v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(random)] // Enable the random feature for nightly
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/interface/quic.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     error::{self, Failure, Network},
[INFO] [stdout]   |             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SipHasher`
[INFO] [stdout]  --> src/raft.rs:8:41
[INFO] [stdout]   |
[INFO] [stdout] 8 |     hash::{DefaultHasher, Hash, Hasher, SipHasher},
[INFO] [stdout]   |                                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `std::hash::SipHasher`: use `std::hash::DefaultHasher` instead
[INFO] [stdout]  --> src/raft.rs:8:41
[INFO] [stdout]   |
[INFO] [stdout] 8 |     hash::{DefaultHasher, Hash, Hasher, SipHasher},
[INFO] [stdout]   |                                         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]     --> src/raft.rs:1546:21
[INFO] [stdout]      |
[INFO] [stdout] 1545 |                     let resp = todo!();
[INFO] [stdout]      |                                ------- any code following this expression is unreachable
[INFO] [stdout] 1546 |                     responses.push((*node, Resp::Client(resp)));
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/raft.rs:676:29
[INFO] [stdout]     |
[INFO] [stdout] 676 |             LeadReq::Step { node, reason } => {
[INFO] [stdout]     |                             ^^^^ help: try ignoring the field: `node: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reason`
[INFO] [stdout]    --> src/raft.rs:676:35
[INFO] [stdout]     |
[INFO] [stdout] 676 |             LeadReq::Step { node, reason } => {
[INFO] [stdout]     |                                   ^^^^^^ help: try ignoring the field: `reason: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leader`
[INFO] [stdout]    --> src/raft.rs:793:31
[INFO] [stdout]     |
[INFO] [stdout] 793 |             ReplReq::Commit { leader, index } => {
[INFO] [stdout]     |                               ^^^^^^ help: try ignoring the field: `leader: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/raft.rs:943:35
[INFO] [stdout]     |
[INFO] [stdout] 943 |             MgmtReq::Join { node, addr, peers } => {
[INFO] [stdout]     |                                   ^^^^ help: try ignoring the field: `addr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/raft.rs:980:34
[INFO] [stdout]     |
[INFO] [stdout] 980 |             MgmtReq::Add { node, addr } => {
[INFO] [stdout]     |                                  ^^^^ help: try ignoring the field: `addr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `commit_index`
[INFO] [stdout]     --> src/raft.rs:1213:13
[INFO] [stdout]      |
[INFO] [stdout] 1213 |         let commit_index = state.volatile.commit_index;
[INFO] [stdout]      |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_commit_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_index`
[INFO] [stdout]     --> src/raft.rs:1216:31
[INFO] [stdout]      |
[INFO] [stdout] 1216 |         let (mut new_entries, last_index, node_id, current_term, cluster_nodes, leader_data) = {
[INFO] [stdout]      |                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_term`
[INFO] [stdout]     --> src/raft.rs:1216:52
[INFO] [stdout]      |
[INFO] [stdout] 1216 |         let (mut new_entries, last_index, node_id, current_term, cluster_nodes, leader_data) = {
[INFO] [stdout]      |                                                    ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/raft.rs:1216:14
[INFO] [stdout]      |
[INFO] [stdout] 1216 |         let (mut new_entries, last_index, node_id, current_term, cluster_nodes, leader_data) = {
[INFO] [stdout]      |              ----^^^^^^^^^^^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client_req`
[INFO] [stdout]     --> src/raft.rs:1543:29
[INFO] [stdout]      |
[INFO] [stdout] 1543 |                 Req::Client(client_req) => {
[INFO] [stdout]      |                             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_client_req`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `resp`
[INFO] [stdout]     --> src/raft.rs:1545:25
[INFO] [stdout]      |
[INFO] [stdout] 1545 |                     let resp = todo!();
[INFO] [stdout]      |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `snapshot_last`
[INFO] [stdout]     --> src/raft.rs:1555:21
[INFO] [stdout]      |
[INFO] [stdout] 1555 |                     snapshot_last,
[INFO] [stdout]      |                     ^^^^^^^^^^^^^ help: try ignoring the field: `snapshot_last: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_term`
[INFO] [stdout]     --> src/raft.rs:1556:21
[INFO] [stdout]      |
[INFO] [stdout] 1556 |                     current_term,
[INFO] [stdout]      |                     ^^^^^^^^^^^^ help: try ignoring the field: `current_term: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `voted_for`
[INFO] [stdout]     --> src/raft.rs:1557:21
[INFO] [stdout]      |
[INFO] [stdout] 1557 |                     voted_for,
[INFO] [stdout]      |                     ^^^^^^^^^ help: try ignoring the field: `voted_for: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `snapshot`
[INFO] [stdout]     --> src/raft.rs:1558:21
[INFO] [stdout]      |
[INFO] [stdout] 1558 |                     snapshot,
[INFO] [stdout]      |                     ^^^^^^^^ help: try ignoring the field: `snapshot: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `settings`
[INFO] [stdout]     --> src/raft.rs:1559:21
[INFO] [stdout]      |
[INFO] [stdout] 1559 |                     settings,
[INFO] [stdout]      |                     ^^^^^^^^ help: try ignoring the field: `settings: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_known_leader`
[INFO] [stdout]     --> src/raft.rs:1566:21
[INFO] [stdout]      |
[INFO] [stdout] 1566 |                     last_known_leader,
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^ help: try ignoring the field: `last_known_leader: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leader_id`
[INFO] [stdout]     --> src/raft.rs:1679:29
[INFO] [stdout]      |
[INFO] [stdout] 1679 |                 if let Some(leader_id) = learner_state.leader_id {
[INFO] [stdout]      |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leader_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `span` (lib) due to 1 previous error; 22 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9e809dd044a320b993197b887a75df1fbd058208e9e55b69c73c0191ebba021c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e809dd044a320b993197b887a75df1fbd058208e9e55b69c73c0191ebba021c", kill_on_drop: false }`
[INFO] [stdout] 9e809dd044a320b993197b887a75df1fbd058208e9e55b69c73c0191ebba021c
