[INFO] fetching crate rpc-api 0.1.0...
[INFO] testing rpc-api-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate rpc-api 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rpc-api 0.1.0
[INFO] finished tweaking crates.io crate rpc-api 0.1.0
[INFO] tweaked toml for crates.io crate rpc-api 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rpc-api 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 169 packages to latest compatible versions
[INFO] [stderr]       Adding http-body v1.0.0-rc.2 (available: v1.0.1)
[INFO] [stderr]       Adding http-body-util v0.1.0-rc.2 (available: v0.1.3)
[INFO] [stderr]       Adding hyper v1.0.0-rc.4 (available: v1.7.0)
[INFO] [stderr]       Adding reqwest v0.11.27 (available: v0.12.23)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8542bc4ece0a0034e9468f64f7881c74326b4b3ffad41c4c4841812abaa83856
[INFO] running `Command { std: "docker" "start" "-a" "8542bc4ece0a0034e9468f64f7881c74326b4b3ffad41c4c4841812abaa83856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8542bc4ece0a0034e9468f64f7881c74326b4b3ffad41c4c4841812abaa83856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8542bc4ece0a0034e9468f64f7881c74326b4b3ffad41c4c4841812abaa83856", kill_on_drop: false }`
[INFO] [stdout] 8542bc4ece0a0034e9468f64f7881c74326b4b3ffad41c4c4841812abaa83856
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd572b4919e773a6378dd8d7f4475131a7158f707cd580ee8e3a79422395c5f0
[INFO] running `Command { std: "docker" "start" "-a" "bd572b4919e773a6378dd8d7f4475131a7158f707cd580ee8e3a79422395c5f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]    Compiling http-body v1.0.0-rc.2
[INFO] [stderr]    Compiling trait-set v0.3.0
[INFO] [stderr]    Compiling http-body-util v0.1.0-rc.2
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling tokio-util v0.7.16
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.3.27
[INFO] [stderr]    Compiling hyper v0.14.32
[INFO] [stderr]    Compiling hyper v1.0.0-rc.4
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.27
[INFO] [stderr]    Compiling rpc-api v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/rpc/handlers.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | 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: unused import: `std::task::Context`
[INFO] [stdout]  --> src/rpc/handlers.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::task::Context;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stdout]  --> src/rpc/handlers.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::de::DeserializeOwned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/rpc/handlers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Error`
[INFO] [stdout]  --> src/rpc/conversions.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/rpc/proxy.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stdout]  --> src/rpc/proxy.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde::de::DeserializeOwned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/rpc/proxy.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::rpc`
[INFO] [stdout]  --> src/rpc/proxy.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::rpc;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/rpc/properties.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/rpc/conversions.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Err(err) => { Err(rpc_error("serde from_str failed")) }
[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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rpc/handlers.rs:72:26
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn from(payload: &str) -> Result<Payload, String> {
[INFO] [stdout]    |                          ^^^^            ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn from(payload: &str) -> Result<Payload<'_>, String> {
[INFO] [stdout]    |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.41s
[INFO] running `Command { std: "docker" "inspect" "bd572b4919e773a6378dd8d7f4475131a7158f707cd580ee8e3a79422395c5f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd572b4919e773a6378dd8d7f4475131a7158f707cd580ee8e3a79422395c5f0", kill_on_drop: false }`
[INFO] [stdout] bd572b4919e773a6378dd8d7f4475131a7158f707cd580ee8e3a79422395c5f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb2afb2281abde0afe2c26eb194b464805d5c29239b9f5382247c9caf6fd323f
[INFO] running `Command { std: "docker" "start" "-a" "eb2afb2281abde0afe2c26eb194b464805d5c29239b9f5382247c9caf6fd323f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rpc-api v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/rpc/handlers.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | 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: unused import: `std::task::Context`
[INFO] [stdout]  --> src/rpc/handlers.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::task::Context;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stdout]  --> src/rpc/handlers.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::de::DeserializeOwned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/rpc/handlers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Error`
[INFO] [stdout]  --> src/rpc/conversions.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/rpc/proxy.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stdout]  --> src/rpc/proxy.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde::de::DeserializeOwned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/rpc/proxy.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::rpc`
[INFO] [stdout]  --> src/rpc/proxy.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::rpc;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/rpc/properties.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/rpc/conversions.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Err(err) => { Err(rpc_error("serde from_str failed")) }
[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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rpc/handlers.rs:72:26
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn from(payload: &str) -> Result<Payload, String> {
[INFO] [stdout]    |                          ^^^^            ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn from(payload: &str) -> Result<Payload<'_>, String> {
[INFO] [stdout]    |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/rpc/handlers.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | 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: unused import: `std::task::Context`
[INFO] [stdout]  --> src/rpc/handlers.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::task::Context;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stdout]  --> src/rpc/handlers.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::de::DeserializeOwned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/rpc/handlers.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Error`
[INFO] [stdout]  --> src/rpc/conversions.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/rpc/proxy.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stdout]  --> src/rpc/proxy.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde::de::DeserializeOwned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/rpc/proxy.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::rpc`
[INFO] [stdout]  --> src/rpc/proxy.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::rpc;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/rpc/properties.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]   --> src/rpc/properties.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use std::iter::Map;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/rpc/conversions.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Err(err) => { Err(rpc_error("serde from_str failed")) }
[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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rpc/handlers.rs:72:26
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn from(payload: &str) -> Result<Payload, String> {
[INFO] [stdout]    |                          ^^^^            ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn from(payload: &str) -> Result<Payload<'_>, String> {
[INFO] [stdout]    |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "eb2afb2281abde0afe2c26eb194b464805d5c29239b9f5382247c9caf6fd323f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb2afb2281abde0afe2c26eb194b464805d5c29239b9f5382247c9caf6fd323f", kill_on_drop: false }`
[INFO] [stdout] eb2afb2281abde0afe2c26eb194b464805d5c29239b9f5382247c9caf6fd323f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9e0acb9161bea45794f4c5198e9169a28bad4c32e0296ca481941aec7c01e00b
[INFO] running `Command { std: "docker" "start" "-a" "9e0acb9161bea45794f4c5198e9169a28bad4c32e0296ca481941aec7c01e00b", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/rpc/handlers.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::task::Context`
[INFO] [stderr]  --> src/rpc/handlers.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::task::Context;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stderr]  --> src/rpc/handlers.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use serde::de::DeserializeOwned;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::Serialize`
[INFO] [stderr]  --> src/rpc/handlers.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde::Serialize;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::Error`
[INFO] [stderr]  --> src/rpc/conversions.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serde_json::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/rpc/proxy.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::de::DeserializeOwned`
[INFO] [stderr]  --> src/rpc/proxy.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde::de::DeserializeOwned;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::Serialize`
[INFO] [stderr]  --> src/rpc/proxy.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serde::Serialize;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::rpc`
[INFO] [stderr]  --> src/rpc/proxy.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::rpc;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Map`
[INFO] [stderr]  --> src/rpc/properties.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::iter::Map;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/rpc/conversions.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         Err(err) => { Err(rpc_error("serde from_str failed")) }
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/rpc/handlers.rs:72:26
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn from(payload: &str) -> Result<Payload, String> {
[INFO] [stderr]    |                          ^^^^            ^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn from(payload: &str) -> Result<Payload<'_>, String> {
[INFO] [stderr]    |                                                 ++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Map`
[INFO] [stderr]   --> src/rpc/properties.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     use std::iter::Map;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rpc-api` (lib) generated 12 warnings (run `cargo fix --lib -p rpc-api` to apply 11 suggestions)
[INFO] [stderr] warning: `rpc-api` (lib test) generated 13 warnings (12 duplicates) (run `cargo fix --lib -p rpc-api --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rpc_api-2e42c01ecd6f1894)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test rpc::properties::test::test ... ok
[INFO] [stdout] test rpc::properties::test::test_empty_lines ... ok
[INFO] [stdout] test rpc::properties::test::test_eq_blank ... ok
[INFO] [stdout] test rpc::properties::test::test_without_equal ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_compila.rs (/opt/rustwide/target/debug/deps/test_compila-f3df459945529289)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rpc_api
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9e0acb9161bea45794f4c5198e9169a28bad4c32e0296ca481941aec7c01e00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e0acb9161bea45794f4c5198e9169a28bad4c32e0296ca481941aec7c01e00b", kill_on_drop: false }`
[INFO] [stdout] 9e0acb9161bea45794f4c5198e9169a28bad4c32e0296ca481941aec7c01e00b