[INFO] cloning repository https://github.com/keepri/algo-ds [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keepri/algo-ds" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeepri%2Falgo-ds", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeepri%2Falgo-ds'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e86369b15d0cf927544ada9b2bf15c7edf4c3086 [INFO] checking keepri/algo-ds against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeepri%2Falgo-ds" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/keepri/algo-ds on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/keepri/algo-ds [INFO] finished tweaking git repo https://github.com/keepri/algo-ds [INFO] tweaked toml for git repo https://github.com/keepri/algo-ds written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/keepri/algo-ds already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b477c9a9d44f9f486e4e07f4f40f960d5ec4b5b7bd6e7a647a2c4c3d4b1ba754 [INFO] running `Command { std: "docker" "start" "-a" "b477c9a9d44f9f486e4e07f4f40f960d5ec4b5b7bd6e7a647a2c4c3d4b1ba754", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b477c9a9d44f9f486e4e07f4f40f960d5ec4b5b7bd6e7a647a2c4c3d4b1ba754", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b477c9a9d44f9f486e4e07f4f40f960d5ec4b5b7bd6e7a647a2c4c3d4b1ba754", kill_on_drop: false }` [INFO] [stdout] b477c9a9d44f9f486e4e07f4f40f960d5ec4b5b7bd6e7a647a2c4c3d4b1ba754 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3cbebd49e0f9b204e858c4f0f165548cdd2f5e86c7087dc61836f9d88fffd05c [INFO] running `Command { std: "docker" "start" "-a" "3cbebd49e0f9b204e858c4f0f165548cdd2f5e86c7087dc61836f9d88fffd05c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling eyre v0.6.8 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking once_cell v1.18.0 [INFO] [stderr] Checking indenter v0.3.3 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking algorithms v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/heap/min_heap.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{default::Default, fmt::Debug}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/queue/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/stack/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/heap/min_heap.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{default::Default, fmt::Debug}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/queue/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/stack/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple methods are never used [INFO] [stdout] --> src/ds/list/mod.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 25 | trait LinkedListTrait { [INFO] [stdout] | --------------- methods in this trait [INFO] [stdout] 26 | fn len(&self) -> usize; [INFO] [stdout] | ^^^ [INFO] [stdout] 27 | fn insert_at(&self, item: T, index: usize) -> (); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 28 | fn remove(&self, item: T) -> Option; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 29 | fn remove_at(&self, index: usize) -> Option; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 30 | fn append(&self, item: T) -> (); [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 31 | fn prepend(&self, item: T) -> (); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 32 | fn get(&self, index: usize) -> Option; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple methods are never used [INFO] [stdout] --> src/ds/list/mod.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 25 | trait LinkedListTrait { [INFO] [stdout] | --------------- methods in this trait [INFO] [stdout] 26 | fn len(&self) -> usize; [INFO] [stdout] | ^^^ [INFO] [stdout] 27 | fn insert_at(&self, item: T, index: usize) -> (); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 28 | fn remove(&self, item: T) -> Option; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 29 | fn remove_at(&self, index: usize) -> Option; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 30 | fn append(&self, item: T) -> (); [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 31 | fn prepend(&self, item: T) -> (); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 32 | fn get(&self, index: usize) -> Option; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.97s [INFO] running `Command { std: "docker" "inspect" "3cbebd49e0f9b204e858c4f0f165548cdd2f5e86c7087dc61836f9d88fffd05c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3cbebd49e0f9b204e858c4f0f165548cdd2f5e86c7087dc61836f9d88fffd05c", kill_on_drop: false }` [INFO] [stdout] 3cbebd49e0f9b204e858c4f0f165548cdd2f5e86c7087dc61836f9d88fffd05c [INFO] checking keepri/algo-ds against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeepri%2Falgo-ds" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/keepri/algo-ds on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/keepri/algo-ds [INFO] finished tweaking git repo https://github.com/keepri/algo-ds [INFO] tweaked toml for git repo https://github.com/keepri/algo-ds written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/keepri/algo-ds already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 72380bce32c1a9683b1cb74f5dba1b2fd112a10366eab68ff826643264160c82 [INFO] running `Command { std: "docker" "start" "-a" "72380bce32c1a9683b1cb74f5dba1b2fd112a10366eab68ff826643264160c82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "72380bce32c1a9683b1cb74f5dba1b2fd112a10366eab68ff826643264160c82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72380bce32c1a9683b1cb74f5dba1b2fd112a10366eab68ff826643264160c82", kill_on_drop: false }` [INFO] [stdout] 72380bce32c1a9683b1cb74f5dba1b2fd112a10366eab68ff826643264160c82 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7df3da714825d226f0c84b899a2f5fac1f7f9d8d41907931d4ce9289b5433a1a [INFO] running `Command { std: "docker" "start" "-a" "7df3da714825d226f0c84b899a2f5fac1f7f9d8d41907931d4ce9289b5433a1a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Compiling eyre v0.6.8 [INFO] [stderr] Checking once_cell v1.18.0 [INFO] [stderr] Checking indenter v0.3.3 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking algorithms v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/heap/min_heap.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{default::Default, fmt::Debug}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/queue/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/stack/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/heap/min_heap.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{default::Default, fmt::Debug}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/queue/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/ds/stack/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:144:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/ds/stack/mod.rs:67:9 [INFO] [stdout] | [INFO] [stdout] 67 | / if let Some(tail) = self.tail.take() { [INFO] [stdout] 68 | | let mut tail = tail.borrow_mut(); [INFO] [stdout] 69 | | self.tail = tail.prev.clone().take(); [INFO] [stdout] ... | [INFO] [stdout] 78 | | return None; [INFO] [stdout] 79 | | }; [INFO] [stdout] | |_________^ cannot infer type [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/ds/stack/mod.rs:67:9 [INFO] [stdout] | [INFO] [stdout] 67 | / if let Some(tail) = self.tail.take() { [INFO] [stdout] 68 | | let mut tail = tail.borrow_mut(); [INFO] [stdout] 69 | | self.tail = tail.prev.clone().take(); [INFO] [stdout] ... | [INFO] [stdout] 78 | | return None; [INFO] [stdout] 79 | | }; [INFO] [stdout] | |_________^ cannot infer type [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `algorithms` (bin "algorithms" test) due to 2 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `algorithms` (bin "algorithms") due to 2 previous errors; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "7df3da714825d226f0c84b899a2f5fac1f7f9d8d41907931d4ce9289b5433a1a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7df3da714825d226f0c84b899a2f5fac1f7f9d8d41907931d4ce9289b5433a1a", kill_on_drop: false }` [INFO] [stdout] 7df3da714825d226f0c84b899a2f5fac1f7f9d8d41907931d4ce9289b5433a1a