[INFO] cloning repository https://github.com/lforeverhao/rust_learn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lforeverhao/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flforeverhao%2Frust_learn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flforeverhao%2Frust_learn'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5c0fa028aa8343016f141e54ddace34b70347b38 [INFO] checking lforeverhao/rust_learn against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flforeverhao%2Frust_learn" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/lforeverhao/rust_learn on toolchain 4a04890980766cc79878135f5ade8c0c4321e943 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lforeverhao/rust_learn [INFO] finished tweaking git repo https://github.com/lforeverhao/rust_learn [INFO] tweaked toml for git repo https://github.com/lforeverhao/rust_learn written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/lforeverhao/rust_learn already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-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" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1b887b6bb7be3af57fc06cc4a792cd6ef774889c4403fcc7fb38d5ffe77856ed [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" "1b887b6bb7be3af57fc06cc4a792cd6ef774889c4403fcc7fb38d5ffe77856ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1b887b6bb7be3af57fc06cc4a792cd6ef774889c4403fcc7fb38d5ffe77856ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1b887b6bb7be3af57fc06cc4a792cd6ef774889c4403fcc7fb38d5ffe77856ed", kill_on_drop: false }` [INFO] [stdout] 1b887b6bb7be3af57fc06cc4a792cd6ef774889c4403fcc7fb38d5ffe77856ed [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTUP_TOOLCHAIN=4a04890980766cc79878135f5ade8c0c4321e943" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6c676d7265d9848c27904d126d591d19a3f9dc2389b9772635d38d08fa637a80 [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" "6c676d7265d9848c27904d126d591d19a3f9dc2389b9772635d38d08fa637a80", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking futures v0.1.29 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking try-lock v0.2.2 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking test_smart_pointer v0.1.0 (/opt/rustwide/workdir/test_smart_pointer) [INFO] [stdout] warning: unused import: `std::rc::Rc` [INFO] [stdout] --> test_smart_pointer/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::rc::Rc; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fmt::Debug` [INFO] [stdout] --> test_smart_pointer/src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::fmt::Debug; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Add` [INFO] [stdout] --> test_smart_pointer/src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::ops::Add; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::sync::Arc` [INFO] [stdout] --> test_smart_pointer/src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::sync::Arc; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> test_smart_pointer/src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> test_smart_pointer/src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::LinkedList` [INFO] [stdout] --> test_smart_pointer/src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::collections::LinkedList; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow` [INFO] [stdout] --> test_smart_pointer/src/linked_list.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use std::borrow::{Borrow, BorrowMut}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cell::RefCell` [INFO] [stdout] --> test_smart_pointer/src/linked_list.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::cell::RefCell; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::net::Shutdown::Read` [INFO] [stdout] --> test_smart_pointer/src/linked_list.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::net::Shutdown::Read; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `DerefMut`, `Deref` [INFO] [stdout] --> test_smart_pointer/src/linked_list.rs:4:16 [INFO] [stdout] | [INFO] [stdout] 4 | use std::ops::{Deref, DerefMut}; [INFO] [stdout] | ^^^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::rc::Rc` [INFO] [stdout] --> test_smart_pointer/src/linked_list.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::rc::Rc; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow` [INFO] [stdout] --> test_smart_pointer/src/refcell_linked_list.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use std::borrow::{Borrow, BorrowMut}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Deref` [INFO] [stdout] --> test_smart_pointer/src/refcell_linked_list.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::ops::Deref; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `test_smart_pointer` [INFO] [stdout] --> test_smart_pointer/src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | / use std::rc::Rc; [INFO] [stdout] 2 | | use std::fmt::Debug; [INFO] [stdout] 3 | | use std::ops::Add; [INFO] [stdout] 4 | | use std::sync::Arc; [INFO] [stdout] ... | [INFO] [stdout] 83 | | linked_list::test_linked_list(); [INFO] [stdout] 84 | | } [INFO] [stdout] | |_^ consider adding a `main` function to `test_smart_pointer/src/main.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `get_next_mut` found for mutable reference `&mut Box>` in the current scope [INFO] [stdout] --> test_smart_pointer/src/linked_list.rs:88:26 [INFO] [stdout] | [INFO] [stdout] 88 | return x.get_next_mut(); [INFO] [stdout] | ^^^^^^^^^^^^ help: there is an associated function with a similar name: `get_next` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> test_smart_pointer/src/linked_list.rs:96:24 [INFO] [stdout] | [INFO] [stdout] 94 | pub fn get_next(&self) -> Option<&Node> { [INFO] [stdout] | ---------------- expected because this return type... [INFO] [stdout] 95 | if let Some(mut x) = &self.next { [INFO] [stdout] 96 | return x.get_next(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | types differ in mutability [INFO] [stdout] | ...is found to be `Option<&my_link_list::Node>` here [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Option<&my_link_list::Node>` [INFO] [stdout] found enum `Option<&mut my_link_list::Node>` [INFO] [stdout] = note: to return `impl Trait`, all returned values must be of the same type [INFO] [stdout] = note: for information on `impl Trait`, see [INFO] [stdout] = help: you could instead create a new `enum` with a variant for each returned type [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> test_smart_pointer/src/linked_list.rs:166:27 [INFO] [stdout] | [INFO] [stdout] 166 | fn next(&mut self) -> Option { [INFO] [stdout] | ---- ^^^^^^^^^^^^^^^^^^ expected enum `Option`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Option>` [INFO] [stdout] found unit type `()` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `refcell_linked_list::Node<{integer}>` is not an iterator [INFO] [stdout] --> test_smart_pointer/src/refcell_linked_list.rs:35:14 [INFO] [stdout] | [INFO] [stdout] 35 | for x in node { [INFO] [stdout] | ^^^^ `refcell_linked_list::Node<{integer}>` is not an iterator [INFO] [stdout] | [INFO] [stdout] = help: the trait `Iterator` is not implemented for `refcell_linked_list::Node<{integer}>` [INFO] [stdout] = note: required because of the requirements on the impl of `IntoIterator` for `refcell_linked_list::Node<{integer}>` [INFO] [stdout] = note: required by `into_iter` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors; 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0308, E0599, E0601. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `test_smart_pointer` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "6c676d7265d9848c27904d126d591d19a3f9dc2389b9772635d38d08fa637a80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6c676d7265d9848c27904d126d591d19a3f9dc2389b9772635d38d08fa637a80", kill_on_drop: false }` [INFO] [stdout] 6c676d7265d9848c27904d126d591d19a3f9dc2389b9772635d38d08fa637a80