[INFO] crate servant 0.1.0 is already in cache [INFO] testing servant-0.1.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409 [INFO] extracting crate servant 0.1.0 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate servant 0.1.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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-2/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 27da3fd75973c33fbd14ab83b43b3a0def7097016839bb0df2c03be1c1e91b22 [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" "27da3fd75973c33fbd14ab83b43b3a0def7097016839bb0df2c03be1c1e91b22", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "27da3fd75973c33fbd14ab83b43b3a0def7097016839bb0df2c03be1c1e91b22", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "27da3fd75973c33fbd14ab83b43b3a0def7097016839bb0df2c03be1c1e91b22", kill_on_drop: false }` [INFO] [stdout] 27da3fd75973c33fbd14ab83b43b3a0def7097016839bb0df2c03be1c1e91b22 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e1f2d93feffe27a7db850fade8477ee6e5f062ab5060fabfce319c9995542f83 [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" "e1f2d93feffe27a7db850fade8477ee6e5f062ab5060fabfce319c9995542f83", kill_on_drop: false }` [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling libc v0.2.73 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling futures-core v0.3.5 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling wasm-bindgen v0.2.65 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling futures-core-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling futures-io-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling serde_derive v1.0.114 [INFO] [stderr] Compiling serde v1.0.114 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling pin-project-lite v0.1.7 [INFO] [stderr] Compiling spin v0.5.2 [INFO] [stderr] Compiling cc v1.0.58 [INFO] [stderr] Compiling quick-error v1.2.3 [INFO] [stderr] Compiling termcolor v1.1.0 [INFO] [stderr] Compiling bytes v0.5.6 [INFO] [stderr] Compiling untrusted v0.7.1 [INFO] [stderr] Compiling thread_local v1.0.1 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling futures-channel v0.3.5 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling humantime v1.3.0 [INFO] [stderr] Compiling async-channel v1.1.1 [INFO] [stderr] Compiling futures-lite v0.1.9 [INFO] [stderr] Compiling syn v1.0.35 [INFO] [stderr] Compiling regex v1.3.9 [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling smallvec v0.6.13 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling num-integer v0.1.43 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling kv-log-macro v1.0.7 [INFO] [stderr] Compiling blocking v0.4.7 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling time v0.1.43 [INFO] [stderr] Compiling socket2 v0.3.12 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling ring v0.16.15 [INFO] [stderr] Compiling env_logger v0.7.1 [INFO] [stderr] Compiling chrono v0.4.13 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling wasm-bindgen-backend v0.2.65 [INFO] [stderr] Compiling derivative v1.0.4 [INFO] [stderr] Compiling wasm-bindgen-macro-support v0.2.65 [INFO] [stderr] Compiling pin-project-internal v0.4.22 [INFO] [stderr] Compiling futures-macro v0.3.5 [INFO] [stderr] Compiling servant-macro v0.1.0 [INFO] [stderr] Compiling wasm-bindgen-macro v0.2.65 [INFO] [stderr] Compiling ring-channel v0.7.0 [INFO] [stderr] Compiling servant-log v0.1.0 [INFO] [stderr] Compiling js-sys v0.3.42 [INFO] [stderr] Compiling pin-project v0.4.22 [INFO] [stderr] Compiling futures-util v0.3.5 [INFO] [stderr] Compiling web-sys v0.3.42 [INFO] [stderr] Compiling futures-executor v0.3.5 [INFO] [stderr] Compiling smol v0.1.18 [INFO] [stderr] Compiling futures v0.3.5 [INFO] [stderr] Compiling futures_codec v0.3.4 [INFO] [stderr] Compiling gloo-timers v0.2.1 [INFO] [stderr] Compiling futures-timer v3.0.2 [INFO] [stderr] Compiling async-std v1.6.2 [INFO] [stderr] Compiling bincode v1.3.1 [INFO] [stderr] Compiling servant-codec v0.1.0 [INFO] [stderr] Compiling 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] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 55s [INFO] running `Command { std: "docker" "inspect" "e1f2d93feffe27a7db850fade8477ee6e5f062ab5060fabfce319c9995542f83", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e1f2d93feffe27a7db850fade8477ee6e5f062ab5060fabfce319c9995542f83", kill_on_drop: false }` [INFO] [stdout] e1f2d93feffe27a7db850fade8477ee6e5f062ab5060fabfce319c9995542f83 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b9fdad8aa8b1bfbf7605ba8320bc3d2184c58f6f94cc4b024b8a6d24d503d256 [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" "b9fdad8aa8b1bfbf7605ba8320bc3d2184c58f6f94cc4b024b8a6d24d503d256", kill_on_drop: false }` [INFO] [stderr] Compiling 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 test [unoptimized + debuginfo] target(s) in 3.35s [INFO] running `Command { std: "docker" "inspect" "b9fdad8aa8b1bfbf7605ba8320bc3d2184c58f6f94cc4b024b8a6d24d503d256", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b9fdad8aa8b1bfbf7605ba8320bc3d2184c58f6f94cc4b024b8a6d24d503d256", kill_on_drop: false }` [INFO] [stdout] b9fdad8aa8b1bfbf7605ba8320bc3d2184c58f6f94cc4b024b8a6d24d503d256 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 58a3a0fc0fb6ddfb86b78e370346623244aae00f3423aadf9b7e2d7aa7a35797 [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" "58a3a0fc0fb6ddfb86b78e370346623244aae00f3423aadf9b7e2d7aa7a35797", kill_on_drop: false }` [INFO] [stderr] warning: associated function is never used: `len` [INFO] [stderr] --> src/list.rs:54:12 [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 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] warning: field is never read: `tail` [INFO] [stderr] --> src/list.rs:43:5 [INFO] [stderr] | [INFO] [stderr] 43 | tail: Option>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/list.rs:47:12 [INFO] [stderr] | [INFO] [stderr] 47 | pub fn new() -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `len` [INFO] [stderr] --> src/list.rs:54:12 [INFO] [stderr] | [INFO] [stderr] 54 | pub fn len(&self) -> usize { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `top` [INFO] [stderr] --> src/list.rs:57:12 [INFO] [stderr] | [INFO] [stderr] 57 | pub fn top(&mut self, node: Node) { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `bottom` [INFO] [stderr] --> src/list.rs:81:12 [INFO] [stderr] | [INFO] [stderr] 81 | pub fn bottom(&mut self, node: Node) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `remove` [INFO] [stderr] --> src/list.rs:105:12 [INFO] [stderr] | [INFO] [stderr] 105 | pub fn remove(&mut self, node: Node) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `push_head` [INFO] [stderr] --> src/list.rs:118:12 [INFO] [stderr] | [INFO] [stderr] 118 | pub fn push_head(&mut self, val: T) -> Node { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `push_back` [INFO] [stderr] --> src/list.rs:134:12 [INFO] [stderr] | [INFO] [stderr] 134 | pub fn push_back(&mut self, val: T) -> Node { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `pop_head` [INFO] [stderr] --> src/list.rs:150:12 [INFO] [stderr] | [INFO] [stderr] 150 | pub fn pop_head(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `pop_back` [INFO] [stderr] --> src/list.rs:165:12 [INFO] [stderr] | [INFO] [stderr] 165 | pub fn pop_back(&mut self) -> Option { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant 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] Finished test [unoptimized + debuginfo] target(s) in 0.13s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/servant-4b071812aa983166 [INFO] [stdout] [INFO] [stdout] running 8 tests [INFO] [stdout] test drop_guard::tests::deref ... ok [INFO] [stdout] test drop_guard::tests::drop_change ... ok [INFO] [stdout] test drop_guard::tests::keep_sync_shared_data ... ok [INFO] [stdout] test drop_guard::tests::keep_send_shared_data ... ok [INFO] [stdout] test drop_guard::tests::it_works ... ok [INFO] [stdout] test drop_guard::tests::deref_mut ... ok [INFO] [stdout] test list::test::test2 ... ok [INFO] [stdout] test list::test::test1 ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- list::test::test1 stdout ---- [INFO] [stdout] [src/list.rs:197] &l = [1]-(|1|) [INFO] [stdout] [src/list.rs:199] &l = [2]-(|4>)-(<1|) [INFO] [stdout] [src/list.rs:201] &l = [3]-(|4>)-(<1>)-(<2|) [INFO] [stdout] [src/list.rs:203] &l = [4]-(|5>)-(<4>)-(<1>)-(<2|) [INFO] [stdout] [src/list.rs:205] &l = [5]-(|5>)-(<4>)-(<1>)-(<2>)-(<3|) [INFO] [stdout] [src/list.rs:208] &l = [4]-(|5>)-(<4>)-(<2>)-(<3|) [INFO] [stdout] [src/list.rs:210] &l = [2]-(|4>)-(<2>)-(<3|) [INFO] [stdout] [src/list.rs:212] &l = [1]-(|4>)-(<3|) [INFO] [stdout] thread 'list::test::test1' panicked at 'attempt to subtract with overflow', src/list.rs:116:9 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x563b33952a95 - backtrace::backtrace::libunwind::trace::hea89dfbbfe67f40d [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stdout] 1: 0x563b33952a95 - backtrace::backtrace::trace_unsynchronized::h0513dd713d7644d4 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x563b33952a95 - std::sys_common::backtrace::_print_fmt::h040abae64e4a24a9 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stdout] 3: 0x563b33952a95 - ::fmt::hb4bdb37c3c335733 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] 4: 0x563b3397a70c - core::fmt::write::h540ac4a6a1232abc [INFO] [stdout] at src/libcore/fmt/mod.rs:1076 [INFO] [stdout] 5: 0x563b33905645 - std::io::Write::write_fmt::h4be0daababb55bba [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/io/mod.rs:1539 [INFO] [stdout] 6: 0x563b3394d161 - std::io::impls::>::write_fmt::h83c1e1aa73f374f5 [INFO] [stdout] at src/libstd/io/impls.rs:176 [INFO] [stdout] 7: 0x563b339551f0 - std::sys_common::backtrace::_print::hb55cc635eaf1882e [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stdout] 8: 0x563b339551f0 - std::sys_common::backtrace::print::h2b2218fa55714084 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x563b339551f0 - std::panicking::default_hook::{{closure}}::h578517c025765cf3 [INFO] [stdout] at src/libstd/panicking.rs:198 [INFO] [stdout] 10: 0x563b33954eea - std::panicking::default_hook::h4cafc94c2fc640fb [INFO] [stdout] at src/libstd/panicking.rs:214 [INFO] [stdout] 11: 0x563b33955833 - std::panicking::rust_panic_with_hook::h3eeb5001beeca5c3 [INFO] [stdout] at src/libstd/panicking.rs:526 [INFO] [stdout] 12: 0x563b3395542b - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:437 [INFO] [stdout] 13: 0x563b339790a1 - core::panicking::panic_fmt::h78830ea6a34e7206 [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 14: 0x563b33978fed - core::panicking::panic::h68e56c2eeba99c8c [INFO] [stdout] at src/libcore/panicking.rs:50 [INFO] [stdout] 15: 0x563b338ff2a3 - servant::list::List::remove::hff4eef3d48f0e6dd [INFO] [stdout] at src/list.rs:116 [INFO] [stdout] 16: 0x563b338f7fe0 - servant::list::test::test1::h7dd110a301f7f576 [INFO] [stdout] at src/list.rs:213 [INFO] [stdout] 17: 0x563b338f625a - servant::list::test::test1::{{closure}}::h76012d3aec1b99ff [INFO] [stdout] at src/list.rs:189 [INFO] [stdout] 18: 0x563b33902e2e - core::ops::function::FnOnce::call_once::hba6253652902b370 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libcore/ops/function.rs:233 [INFO] [stdout] 19: 0x563b3392cbbc - as core::ops::function::FnOnce>::call_once::h8340ba6798e0c4ff [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/liballoc/boxed.rs:1081 [INFO] [stdout] 20: 0x563b3392cbbc - as core::ops::function::FnOnce<()>>::call_once::h5590e98676605094 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/panic.rs:318 [INFO] [stdout] 21: 0x563b3392cbbc - std::panicking::try::do_call::hd8680a2dbb0ed3c4 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/panicking.rs:348 [INFO] [stdout] 22: 0x563b3392cbbc - std::panicking::try::h46b4de2d705e7a8d [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/panicking.rs:325 [INFO] [stdout] 23: 0x563b3392cbbc - std::panic::catch_unwind::h059b3f06991e0a9c [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/panic.rs:394 [INFO] [stdout] 24: 0x563b3392cbbc - test::run_test_in_process::h5ae08a65430494a4 [INFO] [stdout] at src/libtest/lib.rs:541 [INFO] [stdout] 25: 0x563b3392cbbc - test::run_test::run_test_inner::{{closure}}::h4b36073838376ae8 [INFO] [stdout] at src/libtest/lib.rs:450 [INFO] [stdout] 26: 0x563b33904b36 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0169d0be588b8bf0 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/sys_common/backtrace.rs:130 [INFO] [stdout] 27: 0x563b33909b25 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h71bfc37e887d3973 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/thread/mod.rs:475 [INFO] [stdout] 28: 0x563b33909b25 - as core::ops::function::FnOnce<()>>::call_once::h36c65072907dc180 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/panic.rs:318 [INFO] [stdout] 29: 0x563b33909b25 - std::panicking::try::do_call::h4e0f426e17cd216c [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/panicking.rs:348 [INFO] [stdout] 30: 0x563b33909b25 - std::panicking::try::hd05e4ef6b4303d29 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/panicking.rs:325 [INFO] [stdout] 31: 0x563b33909b25 - std::panic::catch_unwind::h19a1127ec729c5dd [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/panic.rs:394 [INFO] [stdout] 32: 0x563b33909b25 - std::thread::Builder::spawn_unchecked::{{closure}}::h011300735f06b1e2 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libstd/thread/mod.rs:474 [INFO] [stdout] 33: 0x563b33909b25 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h1e3c55f31f1d122e [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/libcore/ops/function.rs:233 [INFO] [stdout] 34: 0x563b3395ba0a - as core::ops::function::FnOnce>::call_once::hc0e15d78a519721e [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/liballoc/boxed.rs:1081 [INFO] [stdout] 35: 0x563b3395ba0a - as core::ops::function::FnOnce>::call_once::h211da8fffb09f192 [INFO] [stdout] at /rustc/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/src/liballoc/boxed.rs:1081 [INFO] [stdout] 36: 0x563b3395ba0a - std::sys::unix::thread::Thread::new::thread_start::h29594ddebf23e421 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:87 [INFO] [stdout] 37: 0x7f7d2b94c609 - start_thread [INFO] [stdout] 38: 0x7f7d2b858103 - __clone [INFO] [stdout] 39: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] list::test::test1 [INFO] [stdout] [INFO] [stdout] test result: FAILED. 7 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--lib' [INFO] running `Command { std: "docker" "inspect" "58a3a0fc0fb6ddfb86b78e370346623244aae00f3423aadf9b7e2d7aa7a35797", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58a3a0fc0fb6ddfb86b78e370346623244aae00f3423aadf9b7e2d7aa7a35797", kill_on_drop: false }` [INFO] [stdout] 58a3a0fc0fb6ddfb86b78e370346623244aae00f3423aadf9b7e2d7aa7a35797