[INFO] fetching crate post-sockets 0.1.0...
[INFO] checking post-sockets-0.1.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate post-sockets 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate post-sockets 0.1.0 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 post-sockets 0.1.0
[INFO] finished tweaking crates.io crate post-sockets 0.1.0
[INFO] tweaked toml for crates.io crate post-sockets 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 86104ddd1e91988f90735565cca799d55bc276fec4b6e7eda90b3742077d7040
[INFO] running `Command { std: "docker" "start" "-a" "86104ddd1e91988f90735565cca799d55bc276fec4b6e7eda90b3742077d7040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86104ddd1e91988f90735565cca799d55bc276fec4b6e7eda90b3742077d7040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86104ddd1e91988f90735565cca799d55bc276fec4b6e7eda90b3742077d7040", kill_on_drop: false }`
[INFO] [stdout] 86104ddd1e91988f90735565cca799d55bc276fec4b6e7eda90b3742077d7040
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 1082b023ebd9a5fe67690900488fb304745dfe723e2a3132f373ea0ed6a24735
[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" "1082b023ebd9a5fe67690900488fb304745dfe723e2a3132f373ea0ed6a24735", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking post-sockets v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/carrier.rs:34:24
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn send(&mut self, msg : &P::M) {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/protocols/quic/mod.rs:71:30
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn decode_message(&self, data : &[u8]) -> Option<Self::M> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mesg`
[INFO] [stdout]   --> src/protocols/quic/mod.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn encode_message(&self, mesg : &Self::M) -> &[u8] {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_mesg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Carrier`
[INFO] [stdout]   --> src/carrier.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Carrier<P : Protocol> {
[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: `send`
[INFO] [stdout]   --> src/carrier.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn send(&mut self, msg : &P::M) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/carrier.rs:34:24
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn send(&mut self, msg : &P::M) {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/protocols/quic/mod.rs:71:30
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn decode_message(&self, data : &[u8]) -> Option<Self::M> {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mesg`
[INFO] [stdout]   --> src/protocols/quic/mod.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn encode_message(&self, mesg : &Self::M) -> &[u8] {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_mesg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Carrier`
[INFO] [stdout]   --> src/carrier.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Carrier<P : Protocol> {
[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: `send`
[INFO] [stdout]   --> src/carrier.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn send(&mut self, msg : &P::M) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.58s
[INFO] running `Command { std: "docker" "inspect" "1082b023ebd9a5fe67690900488fb304745dfe723e2a3132f373ea0ed6a24735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1082b023ebd9a5fe67690900488fb304745dfe723e2a3132f373ea0ed6a24735", kill_on_drop: false }`
[INFO] [stdout] 1082b023ebd9a5fe67690900488fb304745dfe723e2a3132f373ea0ed6a24735