[INFO] fetching crate servant 0.1.0... [INFO] checking servant-0.1.0 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015 [INFO] extracting crate servant 0.1.0 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate servant 0.1.0 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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-8/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bincode v1.3.1 [INFO] [stderr] Downloaded polling v1.1.0 [INFO] [stderr] Downloaded async-executor v1.3.0 [INFO] [stderr] Downloaded servant-log v0.1.0 [INFO] [stderr] Downloaded wepoll-sys-stjepang v1.0.8 [INFO] [stderr] Downloaded kv-log-macro v1.0.7 [INFO] [stderr] Downloaded blocking v1.0.0 [INFO] [stderr] Downloaded pin-project-lite v0.1.10 [INFO] [stderr] Downloaded servant-codec v0.1.0 [INFO] [stderr] Downloaded derivative v1.0.4 [INFO] [stderr] Downloaded async-mutex v1.4.0 [INFO] [stderr] Downloaded async-global-executor v1.3.0 [INFO] [stderr] Downloaded nb-connect v1.0.1 [INFO] [stderr] Downloaded async-channel v1.4.2 [INFO] [stderr] Downloaded futures-executor v0.3.5 [INFO] [stderr] Downloaded pin-project v0.4.25 [INFO] [stderr] Downloaded fastrand v1.3.5 [INFO] [stderr] Downloaded futures-lite v1.8.0 [INFO] [stderr] Downloaded parking v2.0.0 [INFO] [stderr] Downloaded futures-io v0.3.5 [INFO] [stderr] Downloaded pin-project-internal v0.4.25 [INFO] [stderr] Downloaded event-listener v2.5.1 [INFO] [stderr] Downloaded async-task v4.0.2 [INFO] [stderr] Downloaded atomic-waker v1.0.0 [INFO] [stderr] Downloaded futures v0.3.5 [INFO] [stderr] Downloaded vec-arena v1.0.0 [INFO] [stderr] Downloaded async-io v1.1.6 [INFO] [stderr] Downloaded chrono v0.4.19 [INFO] [stderr] Downloaded servant-macro v0.1.0 [INFO] [stderr] Downloaded cache-padded v1.1.1 [INFO] [stderr] Downloaded gloo-timers v0.2.1 [INFO] [stderr] Downloaded concurrent-queue v1.2.2 [INFO] [stderr] Downloaded waker-fn v1.1.0 [INFO] [stderr] Downloaded async-std v1.6.5 [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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "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] b92523337fb96ce3bc14a2cc36efb65ca7eebc3429e7f49c2e73fb331b9f63da [INFO] running `Command { std: "docker" "start" "-a" "b92523337fb96ce3bc14a2cc36efb65ca7eebc3429e7f49c2e73fb331b9f63da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b92523337fb96ce3bc14a2cc36efb65ca7eebc3429e7f49c2e73fb331b9f63da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b92523337fb96ce3bc14a2cc36efb65ca7eebc3429e7f49c2e73fb331b9f63da", kill_on_drop: false }` [INFO] [stdout] b92523337fb96ce3bc14a2cc36efb65ca7eebc3429e7f49c2e73fb331b9f63da [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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 14cb24343235c9330520725d445df0b32f4726c6a82062b09d1cde03a02d5db5 [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" "14cb24343235c9330520725d445df0b32f4726c6a82062b09d1cde03a02d5db5", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling syn v1.0.42 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.19 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.19 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling cc v1.0.60 [INFO] [stderr] Compiling serde v1.0.116 [INFO] [stderr] Checking spin v0.5.2 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Checking futures-task v0.3.5 [INFO] [stderr] Compiling num-integer v0.1.43 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking async-channel v1.4.2 [INFO] [stderr] Checking futures-lite v1.8.0 [INFO] [stderr] Checking nb-connect v1.0.1 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.19 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.19 [INFO] [stderr] Checking polling v1.1.0 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking kv-log-macro v1.0.7 [INFO] [stderr] Compiling ring v0.16.15 [INFO] [stderr] Checking async-executor v1.3.0 [INFO] [stderr] Checking async-io v1.1.6 [INFO] [stderr] Checking blocking v1.0.0 [INFO] [stderr] Checking async-global-executor v1.3.0 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking async-std v1.6.5 [INFO] [stderr] Checking futures-executor-preview v0.3.0-alpha.19 [INFO] [stderr] Checking futures-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling derivative v1.0.4 [INFO] [stderr] Compiling pin-project-internal v0.4.25 [INFO] [stderr] Compiling futures-macro v0.3.5 [INFO] [stderr] Compiling serde_derive v1.0.116 [INFO] [stderr] Compiling servant-macro v0.1.0 [INFO] [stderr] Checking ring-channel v0.7.0 [INFO] [stderr] Checking servant-log v0.1.0 [INFO] [stderr] Checking pin-project v0.4.25 [INFO] [stderr] Checking futures-util v0.3.5 [INFO] [stderr] Checking futures-executor v0.3.5 [INFO] [stderr] Checking futures v0.3.5 [INFO] [stderr] Checking futures_codec v0.3.4 [INFO] [stderr] Checking bincode v1.3.1 [INFO] [stderr] Checking servant-codec v0.1.0 [INFO] [stderr] Checking servant v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field is never read: `tail` [INFO] [stdout] --> src/list.rs:43:5 [INFO] [stdout] | [INFO] [stdout] 43 | tail: Option>, [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: `new` [INFO] [stdout] --> src/list.rs:47:12 [INFO] [stdout] | [INFO] [stdout] 47 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `len` [INFO] [stdout] --> src/list.rs:54:12 [INFO] [stdout] | [INFO] [stdout] 54 | pub fn len(&self) -> usize { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `top` [INFO] [stdout] --> src/list.rs:57:12 [INFO] [stdout] | [INFO] [stdout] 57 | pub fn top(&mut self, node: Node) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `bottom` [INFO] [stdout] --> src/list.rs:81:12 [INFO] [stdout] | [INFO] [stdout] 81 | pub fn bottom(&mut self, node: Node) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `remove` [INFO] [stdout] --> src/list.rs:105:12 [INFO] [stdout] | [INFO] [stdout] 105 | pub fn remove(&mut self, node: Node) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push_head` [INFO] [stdout] --> src/list.rs:118:12 [INFO] [stdout] | [INFO] [stdout] 118 | pub fn push_head(&mut self, val: T) -> Node { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push_back` [INFO] [stdout] --> src/list.rs:134:12 [INFO] [stdout] | [INFO] [stdout] 134 | pub fn push_back(&mut self, val: T) -> Node { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop_head` [INFO] [stdout] --> src/list.rs:150:12 [INFO] [stdout] | [INFO] [stdout] 150 | pub fn pop_head(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop_back` [INFO] [stdout] --> src/list.rs:165:12 [INFO] [stdout] | [INFO] [stdout] 165 | pub fn pop_back(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `DEFAULT_TIMEOUT_MS` [INFO] [stdout] --> src/servant.rs:63:1 [INFO] [stdout] | [INFO] [stdout] 63 | const DEFAULT_TIMEOUT_MS: usize = 5000; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `len` [INFO] [stdout] --> src/list.rs:54:12 [INFO] [stdout] | [INFO] [stdout] 54 | pub fn len(&self) -> usize { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `DEFAULT_TIMEOUT_MS` [INFO] [stdout] --> src/servant.rs:63:1 [INFO] [stdout] | [INFO] [stdout] 63 | const DEFAULT_TIMEOUT_MS: usize = 5000; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 21s [INFO] running `Command { std: "docker" "inspect" "14cb24343235c9330520725d445df0b32f4726c6a82062b09d1cde03a02d5db5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "14cb24343235c9330520725d445df0b32f4726c6a82062b09d1cde03a02d5db5", kill_on_drop: false }` [INFO] [stdout] 14cb24343235c9330520725d445df0b32f4726c6a82062b09d1cde03a02d5db5