[INFO] fetching crate coap-handler 0.0.2...
[INFO] checking coap-handler-0.0.2 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate coap-handler 0.0.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate coap-handler 0.0.2 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate coap-handler 0.0.2
[INFO] finished tweaking crates.io crate coap-handler 0.0.2
[INFO] tweaked toml for crates.io crate coap-handler 0.0.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windowed-infinity v0.1.1
[INFO] [stderr]   Downloaded coap-numbers v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58718cec55e74e5f08b07219f325618f1574f8c3907ebd5700841760c6588e8e
[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" "58718cec55e74e5f08b07219f325618f1574f8c3907ebd5700841760c6588e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58718cec55e74e5f08b07219f325618f1574f8c3907ebd5700841760c6588e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58718cec55e74e5f08b07219f325618f1574f8c3907ebd5700841760c6588e8e", kill_on_drop: false }`
[INFO] [stdout] 58718cec55e74e5f08b07219f325618f1574f8c3907ebd5700841760c6588e8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] 6bd6e1ad21ff2b9da2d0b96b190b975853c57e1f715af1b83b908f0f21463e5f
[INFO] running `Command { std: "docker" "start" "-a" "6bd6e1ad21ff2b9da2d0b96b190b975853c57e1f715af1b83b908f0f21463e5f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking coap-numbers v0.1.2
[INFO] [stderr]     Checking coap-message v0.1.1
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking windowed-infinity v0.1.1
[INFO] [stderr]     Checking coap-handler v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/helpers.rs:206:8
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn new(data: &'a mut [u8], cursor: isize) -> Self {
[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: `bytes_in_buffer`
[INFO] [stdout]    --> src/helpers.rs:211:8
[INFO] [stdout]     |
[INFO] [stdout] 211 |     fn bytes_in_buffer(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cursor`
[INFO] [stdout]    --> src/helpers.rs:219:8
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn cursor(&self) -> isize {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `etag`
[INFO] [stdout]    --> src/helpers.rs:223:8
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn etag(&self) -> u64 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `did_overflow`
[INFO] [stdout]    --> src/helpers.rs:227:8
[INFO] [stdout]     |
[INFO] [stdout] 227 |     fn did_overflow(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/helpers.rs:206:8
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn new(data: &'a mut [u8], cursor: isize) -> Self {
[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: `bytes_in_buffer`
[INFO] [stdout]    --> src/helpers.rs:211:8
[INFO] [stdout]     |
[INFO] [stdout] 211 |     fn bytes_in_buffer(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cursor`
[INFO] [stdout]    --> src/helpers.rs:219:8
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn cursor(&self) -> isize {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `etag`
[INFO] [stdout]    --> src/helpers.rs:223:8
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn etag(&self) -> u64 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `did_overflow`
[INFO] [stdout]    --> src/helpers.rs:227:8
[INFO] [stdout]     |
[INFO] [stdout] 227 |     fn did_overflow(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/implementations.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |         writer.write_str(*self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/implementations.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |         writer.write_str(*self);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.22s
[INFO] running `Command { std: "docker" "inspect" "6bd6e1ad21ff2b9da2d0b96b190b975853c57e1f715af1b83b908f0f21463e5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd6e1ad21ff2b9da2d0b96b190b975853c57e1f715af1b83b908f0f21463e5f", kill_on_drop: false }`
[INFO] [stdout] 6bd6e1ad21ff2b9da2d0b96b190b975853c57e1f715af1b83b908f0f21463e5f