[INFO] cloning repository https://github.com/takuma-saito/rust_dns [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takuma-saito/rust_dns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakuma-saito%2Frust_dns", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakuma-saito%2Frust_dns'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 67768aac005dc55cc63c83bd90d2afd23cf44e02 [INFO] checking takuma-saito/rust_dns against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakuma-saito%2Frust_dns" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/takuma-saito/rust_dns on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/takuma-saito/rust_dns [INFO] finished tweaking git repo https://github.com/takuma-saito/rust_dns [INFO] tweaked toml for git repo https://github.com/takuma-saito/rust_dns written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/takuma-saito/rust_dns 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tracing-attributes v0.1.4 [INFO] [stderr] Downloaded futures-io-preview v0.3.0-alpha.19 [INFO] [stderr] Downloaded tokio-timer v0.3.0-alpha.6 [INFO] [stderr] Downloaded tokio v0.2.0-alpha.6 [INFO] [stderr] Downloaded tracing v0.1.9 [INFO] [stderr] Downloaded tokio-macros v0.2.0-alpha.6 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.19 [INFO] [stderr] Downloaded futures-preview v0.3.0-alpha.19 [INFO] [stderr] Downloaded futures-timer v0.3.0 [INFO] [stderr] Downloaded tokio-fs v0.2.0-alpha.6 [INFO] [stderr] Downloaded tokio-codec v0.2.0-alpha.6 [INFO] [stderr] Downloaded pin-project-internal v0.4.2 [INFO] [stderr] Downloaded pin-project v0.4.2 [INFO] [stderr] Downloaded tokio-io v0.2.0-alpha.6 [INFO] [stderr] Downloaded tokio-net v0.2.0-alpha.6 [INFO] [stderr] Downloaded tokio-executor v0.2.0-alpha.6 [INFO] [stderr] Downloaded tokio-sync v0.2.0-alpha.6 [INFO] [stderr] Downloaded tracing-core v0.1.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 09cdf90e7bb9880f7a53bb9e069ed7a2d65124569339c14798b77f0cbee2e9a0 [INFO] running `Command { std: "docker" "start" "-a" "09cdf90e7bb9880f7a53bb9e069ed7a2d65124569339c14798b77f0cbee2e9a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "09cdf90e7bb9880f7a53bb9e069ed7a2d65124569339c14798b77f0cbee2e9a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "09cdf90e7bb9880f7a53bb9e069ed7a2d65124569339c14798b77f0cbee2e9a0", kill_on_drop: false }` [INFO] [stdout] 09cdf90e7bb9880f7a53bb9e069ed7a2d65124569339c14798b77f0cbee2e9a0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3152e178d360da8d8b32b4c55d8666669caba49a65ef06383af09e91a5520d18 [INFO] running `Command { std: "docker" "start" "-a" "3152e178d360da8d8b32b4c55d8666669caba49a65ef06383af09e91a5520d18", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking spin v0.5.2 [INFO] [stderr] Compiling proc-macro2 v1.0.5 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.19 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.19 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.19 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.19 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking nodrop v0.1.14 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling pin-project-internal v0.4.2 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Checking tracing-core v0.1.6 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.19 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking lock_api v0.3.1 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking tokio-sync v0.2.0-alpha.6 [INFO] [stderr] Checking futures-executor-preview v0.3.0-alpha.19 [INFO] [stderr] Checking futures-preview v0.3.0-alpha.19 [INFO] [stderr] Checking futures-timer v0.3.0 [INFO] [stderr] Compiling tracing-attributes v0.1.4 [INFO] [stderr] Compiling tokio-macros v0.2.0-alpha.6 [INFO] [stderr] Checking tracing v0.1.9 [INFO] [stderr] Checking tokio-executor v0.2.0-alpha.6 [INFO] [stderr] Checking pin-project v0.4.2 [INFO] [stderr] Checking tokio-io v0.2.0-alpha.6 [INFO] [stderr] Checking tokio-codec v0.2.0-alpha.6 [INFO] [stderr] Checking tokio-fs v0.2.0-alpha.6 [INFO] [stderr] Checking tokio-timer v0.3.0-alpha.6 [INFO] [stderr] Checking tokio-net v0.2.0-alpha.6 [INFO] [stderr] Checking tokio v0.2.0-alpha.6 [INFO] [stderr] Checking rust_dns v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `futures::executor::block_on` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use futures::executor::block_on; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/main.rs:60:10 [INFO] [stdout] | [INFO] [stdout] 60 | if (count > 255) { panic!("name length > 255"); } [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 60 - if (count > 255) { panic!("name length > 255"); } [INFO] [stdout] 60 + if count > 255 { panic!("name length > 255"); } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::executor::block_on` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use futures::executor::block_on; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/main.rs:60:10 [INFO] [stdout] | [INFO] [stdout] 60 | if (count > 255) { panic!("name length > 255"); } [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 60 - if (count > 255) { panic!("name length > 255"); } [INFO] [stdout] 60 + if count > 255 { panic!("name length > 255"); } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:104:19 [INFO] [stdout] | [INFO] [stdout] 104 | async fn dispatch(i: usize, requests: &[(usize, usize)]) -> Vec { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:104:19 [INFO] [stdout] | [INFO] [stdout] 104 | async fn dispatch(i: usize, requests: &[(usize, usize)]) -> Vec { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::slice::::connect`: renamed to join [INFO] [stdout] --> src/main.rs:142:6 [INFO] [stdout] | [INFO] [stdout] 142 | .connect("."); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] help: replace the use of the deprecated method [INFO] [stdout] | [INFO] [stdout] 142 | .join("."); [INFO] [stdout] | ~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::slice::::connect`: renamed to join [INFO] [stdout] --> src/main.rs:142:6 [INFO] [stdout] | [INFO] [stdout] 142 | .connect("."); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] help: replace the use of the deprecated method [INFO] [stdout] | [INFO] [stdout] 142 | .join("."); [INFO] [stdout] | ~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:137:7 [INFO] [stdout] | [INFO] [stdout] 137 | let mut ipaddr = data[(len-4)..len] [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: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:137:7 [INFO] [stdout] | [INFO] [stdout] 137 | let mut ipaddr = data[(len-4)..len] [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: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let mut ptr = (self as *const Self) as *const u16; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let mut ptr = (self as *const Self) as *const u16; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `hex` is never used [INFO] [stdout] --> src/main.rs:92:6 [INFO] [stdout] | [INFO] [stdout] 45 | impl DnsResolver { [INFO] [stdout] | ---------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 92 | fn hex(&self) -> String { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `job` is never used [INFO] [stdout] --> src/main.rs:97:10 [INFO] [stdout] | [INFO] [stdout] 97 | async fn job((i, u): &(usize, usize)) -> usize { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `dispatch` is never used [INFO] [stdout] --> src/main.rs:104:10 [INFO] [stdout] | [INFO] [stdout] 104 | async fn dispatch(i: usize, requests: &[(usize, usize)]) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `run` is never used [INFO] [stdout] --> src/main.rs:112:10 [INFO] [stdout] | [INFO] [stdout] 112 | async fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:99:3 [INFO] [stdout] | [INFO] [stdout] 99 | Delay::new(Duration::from_millis(((*u) * 100) as u64)).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 99 | let _ = Delay::new(Duration::from_millis(((*u) * 100) as u64)).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `hex` is never used [INFO] [stdout] --> src/main.rs:92:6 [INFO] [stdout] | [INFO] [stdout] 45 | impl DnsResolver { [INFO] [stdout] | ---------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 92 | fn hex(&self) -> String { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `job` is never used [INFO] [stdout] --> src/main.rs:97:10 [INFO] [stdout] | [INFO] [stdout] 97 | async fn job((i, u): &(usize, usize)) -> usize { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `dispatch` is never used [INFO] [stdout] --> src/main.rs:104:10 [INFO] [stdout] | [INFO] [stdout] 104 | async fn dispatch(i: usize, requests: &[(usize, usize)]) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `run` is never used [INFO] [stdout] --> src/main.rs:112:10 [INFO] [stdout] | [INFO] [stdout] 112 | async fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:99:3 [INFO] [stdout] | [INFO] [stdout] 99 | Delay::new(Duration::from_millis(((*u) * 100) as u64)).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 99 | let _ = Delay::new(Duration::from_millis(((*u) * 100) as u64)).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `Pool` should have a snake case name [INFO] [stdout] --> src/main.rs:118:7 [INFO] [stdout] | [INFO] [stdout] 118 | let Pool = 30; [INFO] [stdout] | ^^^^ help: convert the identifier to snake case: `pool` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `Pool` should have a snake case name [INFO] [stdout] --> src/main.rs:118:7 [INFO] [stdout] | [INFO] [stdout] 118 | let Pool = 30; [INFO] [stdout] | ^^^^ help: convert the identifier to snake case: `pool` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.98s [INFO] running `Command { std: "docker" "inspect" "3152e178d360da8d8b32b4c55d8666669caba49a65ef06383af09e91a5520d18", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3152e178d360da8d8b32b4c55d8666669caba49a65ef06383af09e91a5520d18", kill_on_drop: false }` [INFO] [stdout] 3152e178d360da8d8b32b4c55d8666669caba49a65ef06383af09e91a5520d18