[INFO] fetching crate resp-async 0.0.4... [INFO] checking resp-async-0.0.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate resp-async 0.0.4 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate resp-async 0.0.4 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] removed /workspace/builds/worker-7-tc1/source/rust-toolchain [INFO] started tweaking crates.io crate resp-async 0.0.4 [INFO] finished tweaking crates.io crate resp-async 0.0.4 [INFO] tweaked toml for crates.io crate resp-async 0.0.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate crates.io crate resp-async 0.0.4 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] Downloading crates ... [INFO] [stderr] Downloaded tokio-codec v0.1.0 [INFO] [stderr] Downloaded log v0.4.3 [INFO] [stderr] Downloaded cfg-if v0.1.4 [INFO] [stderr] Downloaded bytes v0.4.9 [INFO] [stderr] Downloaded iovec v0.1.2 [INFO] [stderr] Downloaded tokio-io v0.1.7 [INFO] [stderr] Downloaded nodrop v0.1.12 [INFO] [stderr] Downloaded futures v0.1.23 [INFO] [stderr] Downloaded version_check v0.1.4 [INFO] [stderr] Downloaded num-integer v0.1.39 [INFO] [stderr] Downloaded num-traits v0.2.5 [INFO] [stderr] Downloaded redox_syscall v0.1.40 [INFO] [stderr] Downloaded time v0.1.40 [INFO] [stderr] Downloaded term v0.5.1 [INFO] [stderr] Downloaded winapi v0.3.5 [INFO] [stderr] Downloaded simplelog v0.5.2 [INFO] [stderr] Downloaded tokio-fs v0.1.2 [INFO] [stderr] Downloaded tokio-tcp v0.1.0 [INFO] [stderr] Downloaded arrayvec v0.4.7 [INFO] [stderr] Downloaded lazy_static v1.1.0 [INFO] [stderr] Downloaded memoffset v0.2.1 [INFO] [stderr] Downloaded crossbeam-epoch v0.4.3 [INFO] [stderr] Downloaded crossbeam-utils v0.3.2 [INFO] [stderr] Downloaded num_cpus v1.8.0 [INFO] [stderr] Downloaded rand v0.4.2 [INFO] [stderr] Downloaded tokio-timer v0.2.4 [INFO] [stderr] Downloaded bitflags v1.0.3 [INFO] [stderr] Downloaded lazycell v0.6.0 [INFO] [stderr] Downloaded mio v0.6.15 [INFO] [stderr] Downloaded slab v0.4.1 [INFO] [stderr] Downloaded tokio-reactor v0.1.2 [INFO] [stderr] Downloaded tokio-executor v0.1.2 [INFO] [stderr] Downloaded tokio-udp v0.1.1 [INFO] [stderr] Downloaded byteorder v1.2.4 [INFO] [stderr] Downloaded libc v0.2.42 [INFO] [stderr] Downloaded chrono v0.4.5 [INFO] [stderr] Downloaded crossbeam-deque v0.3.1 [INFO] [stderr] Downloaded tokio-threadpool v0.1.5 [INFO] [stderr] Downloaded tokio v0.1.7 [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] c7070976a6416f81a4868e24425f96a4a478c311a2b40132bbffb1d3d70a1593 [INFO] running `Command { std: "docker" "start" "-a" "c7070976a6416f81a4868e24425f96a4a478c311a2b40132bbffb1d3d70a1593", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c7070976a6416f81a4868e24425f96a4a478c311a2b40132bbffb1d3d70a1593", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c7070976a6416f81a4868e24425f96a4a478c311a2b40132bbffb1d3d70a1593", kill_on_drop: false }` [INFO] [stdout] c7070976a6416f81a4868e24425f96a4a478c311a2b40132bbffb1d3d70a1593 [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] 6444be87c8b72c856a46a20cc940437ec020082d175a251cc44bd55726064a5a [INFO] running `Command { std: "docker" "start" "-a" "6444be87c8b72c856a46a20cc940437ec020082d175a251cc44bd55726064a5a", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.42 [INFO] [stderr] Checking cfg-if v0.1.4 [INFO] [stderr] Checking byteorder v1.2.4 [INFO] [stderr] Checking futures v0.1.23 [INFO] [stderr] Compiling version_check v0.1.4 [INFO] [stderr] Checking nodrop v0.1.12 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking slab v0.4.1 [INFO] [stderr] Checking lazycell v0.6.0 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Compiling num-traits v0.2.5 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Checking log v0.4.3 [INFO] [stderr] Checking crossbeam-utils v0.3.2 [INFO] [stderr] Checking arrayvec v0.4.7 [INFO] [stderr] Checking term v0.5.1 [INFO] [stderr] Compiling lazy_static v1.1.0 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Checking time v0.1.40 [INFO] [stderr] Checking bytes v0.4.9 [INFO] [stderr] Checking crossbeam-epoch v0.4.3 [INFO] [stderr] Checking mio v0.6.15 [INFO] [stderr] Checking crossbeam-deque v0.3.1 [INFO] [stderr] Checking tokio-executor v0.1.2 [INFO] [stderr] Checking tokio-io v0.1.7 [INFO] [stderr] Checking chrono v0.4.5 [INFO] [stderr] Checking tokio-threadpool v0.1.5 [INFO] [stderr] Checking tokio-timer v0.2.4 [INFO] [stderr] Checking tokio-reactor v0.1.2 [INFO] [stderr] Checking tokio-codec v0.1.0 [INFO] [stderr] Checking tokio-tcp v0.1.0 [INFO] [stderr] Checking tokio-udp v0.1.1 [INFO] [stderr] Checking tokio-fs v0.1.2 [INFO] [stderr] Checking tokio v0.1.7 [INFO] [stderr] Checking simplelog v0.5.2 [INFO] [stderr] Checking resp-async v0.0.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `tokio` is imported redundantly [INFO] [stdout] --> src/io.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use tokio; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | extern crate tokio; [INFO] [stdout] | ------------------- the item `tokio` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/resp.rs:1:20 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::{From, TryFrom}; [INFO] [stdout] | ^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tokio` is imported redundantly [INFO] [stdout] --> src/io.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use tokio; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | extern crate tokio; [INFO] [stdout] | ------------------- the item `tokio` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/resp.rs:1:20 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::{From, TryFrom}; [INFO] [stdout] | ^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/io.rs:35:13 [INFO] [stdout] | [INFO] [stdout] 35 | mem::replace(&mut self.decoder, decoder); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 35 | let _ = mem::replace(&mut self.decoder, decoder); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/io.rs:35:13 [INFO] [stdout] | [INFO] [stdout] 35 | mem::replace(&mut self.decoder, decoder); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 35 | let _ = mem::replace(&mut self.decoder, decoder); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `future` is imported redundantly [INFO] [stdout] --> examples/history.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] 14 | use simplelog::*; [INFO] [stdout] 15 | use tokio::prelude::*; [INFO] [stdout] | ----------------- the item `future` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.61s [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "6444be87c8b72c856a46a20cc940437ec020082d175a251cc44bd55726064a5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6444be87c8b72c856a46a20cc940437ec020082d175a251cc44bd55726064a5a", kill_on_drop: false }` [INFO] [stdout] 6444be87c8b72c856a46a20cc940437ec020082d175a251cc44bd55726064a5a [INFO] checking resp-async-0.0.4 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate resp-async 0.0.4 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate resp-async 0.0.4 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain [INFO] started tweaking crates.io crate resp-async 0.0.4 [INFO] finished tweaking crates.io crate resp-async 0.0.4 [INFO] tweaked toml for crates.io crate resp-async 0.0.4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate crates.io crate resp-async 0.0.4 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6dd89b998730bb73c1c5f61b9295395b1e13186b2bd3d335cc55eb7372b44924 [INFO] running `Command { std: "docker" "start" "-a" "6dd89b998730bb73c1c5f61b9295395b1e13186b2bd3d335cc55eb7372b44924", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6dd89b998730bb73c1c5f61b9295395b1e13186b2bd3d335cc55eb7372b44924", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6dd89b998730bb73c1c5f61b9295395b1e13186b2bd3d335cc55eb7372b44924", kill_on_drop: false }` [INFO] [stdout] 6dd89b998730bb73c1c5f61b9295395b1e13186b2bd3d335cc55eb7372b44924 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8182d83d7468dce7df2e0be3383415e999c5bb256f446efdb382b24e174f4360 [INFO] running `Command { std: "docker" "start" "-a" "8182d83d7468dce7df2e0be3383415e999c5bb256f446efdb382b24e174f4360", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.42 [INFO] [stderr] Checking cfg-if v0.1.4 [INFO] [stderr] Checking byteorder v1.2.4 [INFO] [stderr] Checking futures v0.1.23 [INFO] [stderr] Compiling version_check v0.1.4 [INFO] [stderr] Checking nodrop v0.1.12 [INFO] [stderr] Checking slab v0.4.1 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking lazycell v0.6.0 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Compiling num-traits v0.2.5 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Checking log v0.4.3 [INFO] [stderr] Checking crossbeam-utils v0.3.2 [INFO] [stderr] Checking arrayvec v0.4.7 [INFO] [stderr] Compiling lazy_static v1.1.0 [INFO] [stderr] Checking term v0.5.1 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking time v0.1.40 [INFO] [stderr] Checking bytes v0.4.9 [INFO] [stderr] Checking mio v0.6.15 [INFO] [stderr] Checking crossbeam-epoch v0.4.3 [INFO] [stderr] Checking crossbeam-deque v0.3.1 [INFO] [stderr] Checking tokio-executor v0.1.2 [INFO] [stderr] Checking tokio-io v0.1.7 [INFO] [stderr] Checking tokio-threadpool v0.1.5 [INFO] [stderr] Checking tokio-timer v0.2.4 [INFO] [stderr] Checking tokio-reactor v0.1.2 [INFO] [stderr] Checking tokio-codec v0.1.0 [INFO] [stderr] Checking tokio-fs v0.1.2 [INFO] [stderr] Checking chrono v0.4.5 [INFO] [stderr] Checking tokio-tcp v0.1.0 [INFO] [stderr] Checking tokio-udp v0.1.1 [INFO] [stderr] Checking tokio v0.1.7 [INFO] [stderr] Checking resp-async v0.0.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `tokio` is imported redundantly [INFO] [stdout] --> src/io.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use tokio; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | extern crate tokio; [INFO] [stdout] | ------------------- the item `tokio` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/resp.rs:1:20 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::{From, TryFrom}; [INFO] [stdout] | ^^^^ [INFO] [stdout] --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/io.rs:35:13 [INFO] [stdout] | [INFO] [stdout] 35 | mem::replace(&mut self.decoder, decoder); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 35 | let _ = mem::replace(&mut self.decoder, decoder); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking simplelog v0.5.2 [INFO] [stdout] warning: the item `future` is imported redundantly [INFO] [stdout] --> examples/history.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] 14 | use simplelog::*; [INFO] [stdout] 15 | use tokio::prelude::*; [INFO] [stdout] | ----------------- the item `future` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tokio` is imported redundantly [INFO] [stdout] --> src/io.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use tokio; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | extern crate tokio; [INFO] [stdout] | ------------------- the item `tokio` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/resp.rs:1:20 [INFO] [stdout] | [INFO] [stdout] 1 | use std::convert::{From, TryFrom}; [INFO] [stdout] | ^^^^ [INFO] [stdout] --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/io.rs:35:13 [INFO] [stdout] | [INFO] [stdout] 35 | mem::replace(&mut self.decoder, decoder); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 35 | let _ = mem::replace(&mut self.decoder, decoder); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.25s [INFO] running `Command { std: "docker" "inspect" "8182d83d7468dce7df2e0be3383415e999c5bb256f446efdb382b24e174f4360", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8182d83d7468dce7df2e0be3383415e999c5bb256f446efdb382b24e174f4360", kill_on_drop: false }` [INFO] [stdout] 8182d83d7468dce7df2e0be3383415e999c5bb256f446efdb382b24e174f4360