[INFO] cloning repository https://github.com/cosinlink/ckb-spv-header [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosinlink/ckb-spv-header" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosinlink%2Fckb-spv-header", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosinlink%2Fckb-spv-header'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 01d78ae819d5a60191816435444c7491e5812ed2 [INFO] testing cosinlink/ckb-spv-header against 1.49.0 for beta-1.50-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosinlink%2Fckb-spv-header" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cosinlink/ckb-spv-header on toolchain 1.49.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/cosinlink/ckb-spv-header [INFO] finished tweaking git repo https://github.com/cosinlink/ckb-spv-header [INFO] tweaked toml for git repo https://github.com/cosinlink/ckb-spv-header written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/cosinlink/ckb-spv-header already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 29ead8d84e39be2cb31d617926d0ab207f9a496ff8c07e32bfe1bf6132410f13 [INFO] running `Command { std: "docker" "start" "-a" "29ead8d84e39be2cb31d617926d0ab207f9a496ff8c07e32bfe1bf6132410f13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "29ead8d84e39be2cb31d617926d0ab207f9a496ff8c07e32bfe1bf6132410f13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "29ead8d84e39be2cb31d617926d0ab207f9a496ff8c07e32bfe1bf6132410f13", kill_on_drop: false }` [INFO] [stdout] 29ead8d84e39be2cb31d617926d0ab207f9a496ff8c07e32bfe1bf6132410f13 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cbe0e2efd6b0306f75c882a13bdb3d85f5fb942017434fac657460fe1307736b [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "cbe0e2efd6b0306f75c882a13bdb3d85f5fb942017434fac657460fe1307736b", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.42 [INFO] [stderr] Compiling serde v1.0.116 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling cc v1.0.41 [INFO] [stderr] Compiling faster-hex v0.4.1 [INFO] [stderr] Compiling bit-vec v0.5.1 [INFO] [stderr] Compiling once_cell v1.4.1 [INFO] [stderr] Compiling faster-hex v0.3.1 [INFO] [stderr] Compiling futures v0.1.30 [INFO] [stderr] Compiling eaglesong v0.1.0 [INFO] [stderr] Compiling ckb-build-info v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling merkle-cbt v0.2.2 [INFO] [stderr] Compiling miniz_oxide v0.4.3 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling enum-display-derive v0.1.0 [INFO] [stderr] Compiling ckb-channel v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling tempfile v3.1.0 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling blake2b-rs v0.1.5 [INFO] [stderr] Compiling secp256k1-sys v0.1.2 [INFO] [stderr] Compiling backtrace v0.3.52 [INFO] [stderr] Compiling flate2 v1.0.18 [INFO] [stderr] Compiling includedir v0.5.0 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling ckb-hash v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Compiling includedir_codegen v0.5.0 [INFO] [stderr] Compiling secp256k1 v0.17.2 [INFO] [stderr] Compiling ckb-system-scripts v0.5.1 [INFO] [stderr] Compiling numext-constructor v0.1.4 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling serde_derive v1.0.116 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling failure v0.1.8 [INFO] [stderr] Compiling ckb-fixed-hash-core v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-occupied-capacity-core v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling numext-fixed-uint-core v0.1.4 [INFO] [stderr] Compiling bytes v0.5.6 [INFO] [stderr] Compiling toml v0.5.6 [INFO] [stderr] Compiling serde_json v1.0.58 [INFO] [stderr] Compiling ckb-occupied-capacity-macros v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-fixed-hash-macros v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling molecule v0.6.0 [INFO] [stderr] Compiling ckb-occupied-capacity v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-error v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling proc-macro-crate v0.1.5 [INFO] [stderr] Compiling jsonrpc-core v14.2.0 [INFO] [stderr] Compiling ckb-fixed-hash v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-crypto v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling jsonrpc-derive v14.2.2 [INFO] [stderr] Compiling numext-fixed-uint-hack v0.1.4 [INFO] [stderr] Compiling numext-fixed-uint v0.1.4 [INFO] [stderr] Compiling ckb-rational v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-types v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-jsonrpc-types v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-pow v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-dao-utils v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-resource v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-chain-spec v0.36.0-pre (https://github.com/nervosnetwork/ckb?tag=v0.36.0-rc2#38aacb54) [INFO] [stderr] Compiling ckb-spv-header v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Byte32` [INFO] [stdout] --> src/header_submit.rs:5:20 [INFO] [stdout] | [INFO] [stdout] 5 | packed::{self, Byte32}, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/header_submit.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Deserialize`, `Serialize` [INFO] [stdout] --> src/header_submit.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | use serde::{Deserialize, Serialize}; [INFO] [stdout] | ^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `prelude` [INFO] [stdout] --> src/header_submit.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | prelude::*, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/header_submit.rs:66:21 [INFO] [stdout] | [INFO] [stdout] 66 | Err(err) => { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2m 22s [INFO] running `Command { std: "docker" "inspect" "cbe0e2efd6b0306f75c882a13bdb3d85f5fb942017434fac657460fe1307736b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cbe0e2efd6b0306f75c882a13bdb3d85f5fb942017434fac657460fe1307736b", kill_on_drop: false }` [INFO] [stdout] cbe0e2efd6b0306f75c882a13bdb3d85f5fb942017434fac657460fe1307736b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6a77422faefbe2d87573c8e5c11fa1ceece39e32424b76b245426ffcdbe947f7 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "6a77422faefbe2d87573c8e5c11fa1ceece39e32424b76b245426ffcdbe947f7", kill_on_drop: false }` [INFO] [stderr] Compiling ckb-spv-header v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Byte32` [INFO] [stdout] --> src/header_submit.rs:5:20 [INFO] [stdout] | [INFO] [stdout] 5 | packed::{self, Byte32}, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/header_submit.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Deserialize`, `Serialize` [INFO] [stdout] --> src/header_submit.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | use serde::{Deserialize, Serialize}; [INFO] [stdout] | ^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `prelude` [INFO] [stdout] --> src/header_submit.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | prelude::*, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/header_submit.rs:66:21 [INFO] [stdout] | [INFO] [stdout] 66 | Err(err) => { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Byte32` [INFO] [stdout] --> src/header_submit.rs:5:20 [INFO] [stdout] | [INFO] [stdout] 5 | packed::{self, Byte32}, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/header_submit.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Deserialize`, `Serialize` [INFO] [stdout] --> src/header_submit.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | use serde::{Deserialize, Serialize}; [INFO] [stdout] | ^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `prelude` [INFO] [stdout] --> src/header_submit.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | prelude::*, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/header_submit.rs:66:21 [INFO] [stdout] | [INFO] [stdout] 66 | Err(err) => { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.88s [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "6a77422faefbe2d87573c8e5c11fa1ceece39e32424b76b245426ffcdbe947f7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6a77422faefbe2d87573c8e5c11fa1ceece39e32424b76b245426ffcdbe947f7", kill_on_drop: false }` [INFO] [stdout] 6a77422faefbe2d87573c8e5c11fa1ceece39e32424b76b245426ffcdbe947f7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d5b535366383d05c63b98f7a97711baecd79b0a6624878f59f9d5b9f9abb15cc [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "d5b535366383d05c63b98f7a97711baecd79b0a6624878f59f9d5b9f9abb15cc", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `Byte32` [INFO] [stderr] --> src/header_submit.rs:5:20 [INFO] [stderr] | [INFO] [stderr] 5 | packed::{self, Byte32}, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/header_submit.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize` [INFO] [stderr] --> src/header_submit.rs:9:13 [INFO] [stderr] | [INFO] [stderr] 9 | use serde::{Deserialize, Serialize}; [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `prelude` [INFO] [stderr] --> src/header_submit.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | prelude::*, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/header_submit.rs:66:21 [INFO] [stderr] | [INFO] [stderr] 66 | Err(err) => { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `Byte32` [INFO] [stderr] --> src/header_submit.rs:5:20 [INFO] [stderr] | [INFO] [stderr] 5 | packed::{self, Byte32}, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/header_submit.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize` [INFO] [stderr] --> src/header_submit.rs:9:13 [INFO] [stderr] | [INFO] [stderr] 9 | use serde::{Deserialize, Serialize}; [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `prelude` [INFO] [stderr] --> src/header_submit.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | prelude::*, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/header_submit.rs:66:21 [INFO] [stderr] | [INFO] [stderr] 66 | Err(err) => { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ckb_spv_header-f834224d34c56976 [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 [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ckb_spv_header-31486199bc39d2ce [INFO] [stdout] [INFO] [stderr] Doc-tests ckb-spv-header [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [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 [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d5b535366383d05c63b98f7a97711baecd79b0a6624878f59f9d5b9f9abb15cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d5b535366383d05c63b98f7a97711baecd79b0a6624878f59f9d5b9f9abb15cc", kill_on_drop: false }` [INFO] [stdout] d5b535366383d05c63b98f7a97711baecd79b0a6624878f59f9d5b9f9abb15cc