[INFO] fetching crate uppercut 0.2.0...
[INFO] checking uppercut-0.2.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate uppercut 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate uppercut 0.2.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uppercut 0.2.0
[INFO] finished tweaking crates.io crate uppercut 0.2.0
[INFO] tweaked toml for crates.io crate uppercut 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate uppercut 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parsed v0.1.4
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc5973f16d86cee6d7d4e3615d8681a467ebeaf04ce4c0119b59bc834759a27e
[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" "cc5973f16d86cee6d7d4e3615d8681a467ebeaf04ce4c0119b59bc834759a27e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc5973f16d86cee6d7d4e3615d8681a467ebeaf04ce4c0119b59bc834759a27e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc5973f16d86cee6d7d4e3615d8681a467ebeaf04ce4c0119b59bc834759a27e", kill_on_drop: false }`
[INFO] [stdout] cc5973f16d86cee6d7d4e3615d8681a467ebeaf04ce4c0119b59bc834759a27e
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] f64269ff6936155bfd034896a59f009543f1cbed938fa766ff912b2fb6016bf6
[INFO] running `Command { std: "docker" "start" "-a" "f64269ff6936155bfd034896a59f009543f1cbed938fa766ff912b2fb6016bf6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking parsed v0.1.4
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking core_affinity v0.5.10
[INFO] [stderr]     Checking uppercut v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/remote/client.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/remote/client.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn get(&mut self, addr: &str) -> Option<&mut ByteStream> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `token`
[INFO] [stdout]    --> src/remote/client.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     token: Token,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/remote/client.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/remote/client.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn get(&mut self, addr: &str) -> Option<&mut ByteStream> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `token`
[INFO] [stdout]    --> src/remote/client.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     token: Token,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> tests/../src/config.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(scheduler: SchedulerConfig, remote: RemoteConfig) -> Config {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `listening_at`
[INFO] [stdout]   --> tests/../src/config.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn listening_at(listening: &str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_total_threads`
[INFO] [stdout]   --> tests/../src/config.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn with_total_threads(total_threads: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> tests/../src/remote/client.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> tests/../src/remote/client.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn get(&mut self, addr: &str) -> Option<&mut ByteStream> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `token`
[INFO] [stdout]    --> tests/../src/remote/client.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     token: Token,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pool`
[INFO] [stdout]    --> tests/../src/core.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 206 |     pool: &'a ThreadPool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `spawn_default`
[INFO] [stdout]    --> tests/../src/core.rs:222:12
[INFO] [stdout]     |
[INFO] [stdout] 222 |     pub fn spawn_default<T: 'static + AnyActor + Send + Default>(&self, address: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stop`
[INFO] [stdout]    --> tests/../src/core.rs:235:12
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn stop(&self, address: &str) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `submit`
[INFO] [stdout]    --> tests/../src/core.rs:245:12
[INFO] [stdout]     |
[INFO] [stdout] 245 |     pub fn submit<F: FnOnce() + Send + 'static>(&self, f: F) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> benches/../src/config.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(scheduler: SchedulerConfig, remote: RemoteConfig) -> Config {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `listening_at`
[INFO] [stdout]   --> benches/../src/config.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn listening_at(listening: &str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_total_threads`
[INFO] [stdout]   --> benches/../src/config.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn with_total_threads(total_threads: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> benches/../src/remote/client.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> benches/../src/remote/client.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn get(&mut self, addr: &str) -> Option<&mut ByteStream> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `token`
[INFO] [stdout]    --> benches/../src/remote/client.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     token: Token,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pool`
[INFO] [stdout]    --> benches/../src/core.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 206 |     pool: &'a ThreadPool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delay`
[INFO] [stdout]    --> benches/../src/core.rs:227:12
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn delay(&self, address: &str, mut envelope: Envelope, duration: Duration) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stop`
[INFO] [stdout]    --> benches/../src/core.rs:235:12
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn stop(&self, address: &str) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `submit`
[INFO] [stdout]    --> benches/../src/core.rs:245:12
[INFO] [stdout]     |
[INFO] [stdout] 245 |     pub fn submit<F: FnOnce() + Send + 'static>(&self, f: F) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.91s
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f64269ff6936155bfd034896a59f009543f1cbed938fa766ff912b2fb6016bf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f64269ff6936155bfd034896a59f009543f1cbed938fa766ff912b2fb6016bf6", kill_on_drop: false }`
[INFO] [stdout] f64269ff6936155bfd034896a59f009543f1cbed938fa766ff912b2fb6016bf6