[INFO] crate servant 0.1.0 is already in cache
[INFO] checking servant-0.1.0 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate servant 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate servant 0.1.0 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate servant 0.1.0
[INFO] finished tweaking crates.io crate servant 0.1.0
[INFO] tweaked toml for crates.io crate servant 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fb347b92cdaa1363278e4c958fb7d05154476f6b50fc48ad55bba61538409b21
[INFO] running `"docker" "start" "-a" "fb347b92cdaa1363278e4c958fb7d05154476f6b50fc48ad55bba61538409b21"`
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling servant-macro v0.1.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking broadcaster v1.0.0
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking ring-channel v0.7.0
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Checking servant-log v0.1.0
[INFO] [stderr]     Checking futures_codec v0.3.4
[INFO] [stderr]     Checking servant-codec v0.1.0
[INFO] [stderr]     Checking servant v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never read: `tail`
[INFO] [stderr]   --> src/list.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     tail: Option<Node<T>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/list.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/list.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `top`
[INFO] [stderr]   --> src/list.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn top(&mut self, node: Node<T>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bottom`
[INFO] [stderr]   --> src/list.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn bottom(&mut self, node: Node<T>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]    --> src/list.rs:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn remove(&mut self, node: Node<T>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push_head`
[INFO] [stderr]    --> src/list.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     pub fn push_head(&mut self, val: T) -> Node<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push_back`
[INFO] [stderr]    --> src/list.rs:134:5
[INFO] [stderr]     |
[INFO] [stderr] 134 |     pub fn push_back(&mut self, val: T) -> Node<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop_head`
[INFO] [stderr]    --> src/list.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn pop_head(&mut self) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop_back`
[INFO] [stderr]    --> src/list.rs:165:5
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn pop_back(&mut self) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_TIMEOUT_MS`
[INFO] [stderr]   --> src/servant.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | const DEFAULT_TIMEOUT_MS: usize = 5000;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/list.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_TIMEOUT_MS`
[INFO] [stderr]   --> src/servant.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | const DEFAULT_TIMEOUT_MS: usize = 5000;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.26s
[INFO] running `"docker" "inspect" "fb347b92cdaa1363278e4c958fb7d05154476f6b50fc48ad55bba61538409b21"`
[INFO] running `"docker" "rm" "-f" "fb347b92cdaa1363278e4c958fb7d05154476f6b50fc48ad55bba61538409b21"`
[INFO] [stdout] fb347b92cdaa1363278e4c958fb7d05154476f6b50fc48ad55bba61538409b21