[INFO] cloning repository https://github.com/Hoverbear/fun_with_futures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hoverbear/fun_with_futures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoverbear%2Ffun_with_futures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoverbear%2Ffun_with_futures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f38c3217ee90ed003259aa2d331372bf5e80608e
[INFO] checking Hoverbear/fun_with_futures against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoverbear%2Ffun_with_futures" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hoverbear/fun_with_futures on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hoverbear/fun_with_futures
[INFO] finished tweaking git repo https://github.com/Hoverbear/fun_with_futures
[INFO] tweaked toml for git repo https://github.com/Hoverbear/fun_with_futures written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Hoverbear/fun_with_futures already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d038ab5945dc40136fa542d8a06825d80bd0695d2e52e134111142c55bf31506
[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" "d038ab5945dc40136fa542d8a06825d80bd0695d2e52e134111142c55bf31506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d038ab5945dc40136fa542d8a06825d80bd0695d2e52e134111142c55bf31506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d038ab5945dc40136fa542d8a06825d80bd0695d2e52e134111142c55bf31506", kill_on_drop: false }`
[INFO] [stdout] d038ab5945dc40136fa542d8a06825d80bd0695d2e52e134111142c55bf31506
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcb1c386858f6f6f17b6766be7b3b0963f588afce2e47dc3d9d0b6fb087f0a4e
[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" "dcb1c386858f6f6f17b6766be7b3b0963f588afce2e47dc3d9d0b6fb087f0a4e", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking futures v0.1.10
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking num_cpus v1.2.1
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking mio v0.6.4
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking futures-cpupool v0.1.3
[INFO] [stderr]     Checking tokio-core v0.1.4
[INFO] [stderr]     Checking tokio-proto v0.1.0
[INFO] [stderr]     Checking fun_with_futures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]    --> examples/10-tokio-codec-http.rs:103:36
[INFO] [stdout]     |
[INFO] [stdout] 103 |         ExampleRequest::Get { url: url } => {
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]    --> examples/10-tokio-codec-http.rs:106:37
[INFO] [stdout]     |
[INFO] [stdout] 106 |         ExampleRequest::Post { url: url, content: content } => {
[INFO] [stdout]     |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `url:` in this pattern is redundant
[INFO] [stdout]    --> examples/10-tokio-codec-http.rs:103:31
[INFO] [stdout]     |
[INFO] [stdout] 103 |         ExampleRequest::Get { url: url } => {
[INFO] [stdout]     |                               ^^^^^^^^ help: use shorthand field pattern: `url`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `url:` in this pattern is redundant
[INFO] [stdout]    --> examples/10-tokio-codec-http.rs:106:32
[INFO] [stdout]     |
[INFO] [stdout] 106 |         ExampleRequest::Post { url: url, content: content } => {
[INFO] [stdout]     |                                ^^^^^^^^ help: use shorthand field pattern: `url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `content:` in this pattern is redundant
[INFO] [stdout]    --> examples/10-tokio-codec-http.rs:106:42
[INFO] [stdout]     |
[INFO] [stdout] 106 |         ExampleRequest::Post { url: url, content: content } => {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `content`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `url:` in this pattern is redundant
[INFO] [stdout]    --> examples/11-tokio-full.rs:151:35
[INFO] [stdout]     |
[INFO] [stdout] 151 |             ExampleRequest::Get { url: url } => {
[INFO] [stdout]     |                                   ^^^^^^^^ help: use shorthand field pattern: `url`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `url:` in this pattern is redundant
[INFO] [stdout]    --> examples/11-tokio-full.rs:157:36
[INFO] [stdout]     |
[INFO] [stdout] 157 |             ExampleRequest::Post { url: url, content: content } => {
[INFO] [stdout]     |                                    ^^^^^^^^ help: use shorthand field pattern: `url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `content:` in this pattern is redundant
[INFO] [stdout]    --> examples/11-tokio-full.rs:157:46
[INFO] [stdout]     |
[INFO] [stdout] 157 |             ExampleRequest::Post { url: url, content: content } => {
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `content`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.02s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dcb1c386858f6f6f17b6766be7b3b0963f588afce2e47dc3d9d0b6fb087f0a4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcb1c386858f6f6f17b6766be7b3b0963f588afce2e47dc3d9d0b6fb087f0a4e", kill_on_drop: false }`
[INFO] [stdout] dcb1c386858f6f6f17b6766be7b3b0963f588afce2e47dc3d9d0b6fb087f0a4e