[INFO] cloning repository https://github.com/fuchsnj/actix_bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fuchsnj/actix_bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuchsnj%2Factix_bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuchsnj%2Factix_bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4543ce5f114fc4d6bb44e0390372f3ce48fe85a8
[INFO] checking fuchsnj/actix_bug against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuchsnj%2Factix_bug" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fuchsnj/actix_bug on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fuchsnj/actix_bug
[INFO] finished tweaking git repo https://github.com/fuchsnj/actix_bug
[INFO] tweaked toml for git repo https://github.com/fuchsnj/actix_bug written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/fuchsnj/actix_bug already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6072afe7c96b6c14b5e268578f1108a8764797ac41c9d07f61080244cf6c0b3f
[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" "6072afe7c96b6c14b5e268578f1108a8764797ac41c9d07f61080244cf6c0b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6072afe7c96b6c14b5e268578f1108a8764797ac41c9d07f61080244cf6c0b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6072afe7c96b6c14b5e268578f1108a8764797ac41c9d07f61080244cf6c0b3f", kill_on_drop: false }`
[INFO] [stdout] 6072afe7c96b6c14b5e268578f1108a8764797ac41c9d07f61080244cf6c0b3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c09fcfe98035ce0cecc687bc7ea153a03d3459fc5f3cf6008794617a4f7c832e
[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" "c09fcfe98035ce0cecc687bc7ea153a03d3459fc5f3cf6008794617a4f7c832e", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling serde v1.0.27
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling pulldown-cmark v0.1.0
[INFO] [stderr]    Compiling num-traits v0.1.41
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling bytecount v0.2.0
[INFO] [stderr]     Checking crossbeam v0.3.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]    Compiling actix_derive v0.1.1
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling rand v0.3.20
[INFO] [stderr]     Checking iovec v0.1.1
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking mio v0.6.12
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]     Checking tokio-io v0.1.4
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking mio-uds v0.6.4
[INFO] [stderr]     Checking tokio-core v0.1.12
[INFO] [stderr]     Checking tokio-signal v0.1.3
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling serde_json v1.0.9
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling cargo_metadata v0.3.3
[INFO] [stderr]    Compiling skeptic v0.13.2
[INFO] [stderr]    Compiling actix v0.4.3
[INFO] [stderr]     Checking actix_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arbiter`, `SyncAddress`, `msgs`
[INFO] [stdout]  --> src/main.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use actix::{msgs, Actor, Address, Arbiter, Context, System, Handler, ResponseType, ActorFuture, AsyncContext, SyncAddress};
[INFO] [stdout]   |             ^^^^                  ^^^^^^^                                                                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arbiter`, `SyncAddress`, `msgs`
[INFO] [stdout]  --> src/main.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use actix::{msgs, Actor, Address, Arbiter, Context, System, Handler, ResponseType, ActorFuture, AsyncContext, SyncAddress};
[INFO] [stdout]   |             ^^^^                  ^^^^^^^                                                                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/main.rs:49:6
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let addr: Address<_> = MyActor.start();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/main.rs:20:74
[INFO] [stdout]    |
[INFO] [stdout] 20 |             ctx.spawn(wrap_future(addr.upgrade()).and_then(move |sync_address, _, ctx| {
[INFO] [stdout]    |                                                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `actor`
[INFO] [stdout]   --> src/main.rs:14:70
[INFO] [stdout]    |
[INFO] [stdout] 14 |         ctx.spawn(wrap_future(addr.upgrade()).and_then(move |sync_address, actor: &mut MyActor, ctx: &mut Context<MyActor>| {
[INFO] [stdout]    |                                                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_actor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/main.rs:40:23
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn handle(&mut self, msg: Message, ctx: &mut Self::Context) -> () {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/main.rs:40:37
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn handle(&mut self, msg: Message, ctx: &mut Self::Context) -> () {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/main.rs:49:6
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let addr: Address<_> = MyActor.start();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/main.rs:20:74
[INFO] [stdout]    |
[INFO] [stdout] 20 |             ctx.spawn(wrap_future(addr.upgrade()).and_then(move |sync_address, _, ctx| {
[INFO] [stdout]    |                                                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `actor`
[INFO] [stdout]   --> src/main.rs:14:70
[INFO] [stdout]    |
[INFO] [stdout] 14 |         ctx.spawn(wrap_future(addr.upgrade()).and_then(move |sync_address, actor: &mut MyActor, ctx: &mut Context<MyActor>| {
[INFO] [stdout]    |                                                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_actor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/main.rs:40:23
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn handle(&mut self, msg: Message, ctx: &mut Self::Context) -> () {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/main.rs:40:37
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn handle(&mut self, msg: Message, ctx: &mut Self::Context) -> () {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.79s
[INFO] running `Command { std: "docker" "inspect" "c09fcfe98035ce0cecc687bc7ea153a03d3459fc5f3cf6008794617a4f7c832e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c09fcfe98035ce0cecc687bc7ea153a03d3459fc5f3cf6008794617a4f7c832e", kill_on_drop: false }`
[INFO] [stdout] c09fcfe98035ce0cecc687bc7ea153a03d3459fc5f3cf6008794617a4f7c832e