[INFO] cloning repository https://github.com/matheusfrancisco/learn_rust_smart_pointers [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matheusfrancisco/learn_rust_smart_pointers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatheusfrancisco%2Flearn_rust_smart_pointers", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatheusfrancisco%2Flearn_rust_smart_pointers'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 826c28a89c4cd9e825d8441973dd60192f81c85f [INFO] testing matheusfrancisco/learn_rust_smart_pointers against 1.100.0-beta.1 for beta-1.100-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatheusfrancisco%2Flearn_rust_smart_pointers" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/matheusfrancisco/learn_rust_smart_pointers [INFO] finished tweaking git repo https://github.com/matheusfrancisco/learn_rust_smart_pointers [INFO] tweaked toml for git repo https://github.com/matheusfrancisco/learn_rust_smart_pointers written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/matheusfrancisco/learn_rust_smart_pointers on toolchain 1.100.0-beta.1 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/matheusfrancisco/learn_rust_smart_pointers 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" "+1.100.0-beta.1" "fetch" "--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/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb [INFO] running `Command { std: "docker" "start" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] Compiling rspointers v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `value` is never read [INFO] [stdout] --> src/cell.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct Cell { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 5 | value: UnsafeCell, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Cell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `set` and `get` are never used [INFO] [stdout] --> src/cell.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 12 | impl Cell { [INFO] [stdout] | --------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 19 | pub fn set(&self, value: T) { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 26 | pub fn get(&self) -> T [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `RcInner` is never constructed [INFO] [stdout] --> src/rc.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | struct RcInner { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rc` is never constructed [INFO] [stdout] --> src/rc.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct Rc { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/rc.rs:15:12 [INFO] [stdout] | [INFO] [stdout] 14 | impl Rc { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 15 | pub fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Shared` and `Exclusive` are never constructed [INFO] [stdout] --> src/refcell.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | enum RefState { [INFO] [stdout] | -------- variants in this enum [INFO] [stdout] 10 | Unshared, [INFO] [stdout] 11 | Shared(usize), [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 12 | Exclusive, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `RefState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `value` and `state` are never read [INFO] [stdout] --> src/refcell.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 16 | pub struct RefCell { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 17 | value: UnsafeCell, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 18 | state: Cell, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `RefCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `borrow` and `borrow_mut` are never used [INFO] [stdout] --> src/refcell.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 21 | impl RefCell { [INFO] [stdout] | ------------------ methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 29 | pub fn borrow(&self) -> Option> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | pub fn borrow_mut(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Ref` is never constructed [INFO] [stdout] --> src/refcell.rs:55:12 [INFO] [stdout] | [INFO] [stdout] 55 | pub struct Ref<'refcell, T> { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `RefMut` is never constructed [INFO] [stdout] --> src/refcell.rs:81:12 [INFO] [stdout] | [INFO] [stdout] 81 | pub struct RefMut<'refcell, T> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/rc.rs:55:13 [INFO] [stdout] | [INFO] [stdout] 55 | drop(inner); [INFO] [stdout] | ^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&RcInner` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 55 - drop(inner); [INFO] [stdout] 55 + let _ = inner; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s [INFO] running `Command { std: "docker" "inspect" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] Compiling rspointers v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `sync::Arc` and `thread` [INFO] [stdout] --> src/cell.rs:38:15 [INFO] [stdout] | [INFO] [stdout] 38 | use std::{sync::Arc, thread}; [INFO] [stdout] | ^^^^^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Shared` and `Exclusive` are never constructed [INFO] [stdout] --> src/refcell.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | enum RefState { [INFO] [stdout] | -------- variants in this enum [INFO] [stdout] 10 | Unshared, [INFO] [stdout] 11 | Shared(usize), [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 12 | Exclusive, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `RefState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `value` and `state` are never read [INFO] [stdout] --> src/refcell.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 16 | pub struct RefCell { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 17 | value: UnsafeCell, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 18 | state: Cell, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `RefCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `borrow` and `borrow_mut` are never used [INFO] [stdout] --> src/refcell.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 21 | impl RefCell { [INFO] [stdout] | ------------------ methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 29 | pub fn borrow(&self) -> Option> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | pub fn borrow_mut(&self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Ref` is never constructed [INFO] [stdout] --> src/refcell.rs:55:12 [INFO] [stdout] | [INFO] [stdout] 55 | pub struct Ref<'refcell, T> { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `RefMut` is never constructed [INFO] [stdout] --> src/refcell.rs:81:12 [INFO] [stdout] | [INFO] [stdout] 81 | pub struct RefMut<'refcell, T> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/rc.rs:55:13 [INFO] [stdout] | [INFO] [stdout] 55 | drop(inner); [INFO] [stdout] | ^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&RcInner` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 55 - drop(inner); [INFO] [stdout] 55 + let _ = inner; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s [INFO] running `Command { std: "docker" "inspect" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] warning: unused imports: `sync::Arc` and `thread` [INFO] [stderr] --> src/cell.rs:38:15 [INFO] [stderr] | [INFO] [stderr] 38 | use std::{sync::Arc, thread}; [INFO] [stderr] | ^^^^^^^^^ ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: variants `Shared` and `Exclusive` are never constructed [INFO] [stderr] --> src/refcell.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 9 | enum RefState { [INFO] [stderr] | -------- variants in this enum [INFO] [stderr] 10 | Unshared, [INFO] [stderr] 11 | Shared(usize), [INFO] [stderr] | ^^^^^^ [INFO] [stderr] 12 | Exclusive, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `RefState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: fields `value` and `state` are never read [INFO] [stderr] --> src/refcell.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 16 | pub struct RefCell { [INFO] [stderr] | ------- fields in this struct [INFO] [stderr] 17 | value: UnsafeCell, [INFO] [stderr] | ^^^^^ [INFO] [stderr] 18 | state: Cell, [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `RefCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: methods `borrow` and `borrow_mut` are never used [INFO] [stderr] --> src/refcell.rs:29:12 [INFO] [stderr] | [INFO] [stderr] 21 | impl RefCell { [INFO] [stderr] | ------------------ methods in this implementation [INFO] [stderr] ... [INFO] [stderr] 29 | pub fn borrow(&self) -> Option> { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 43 | pub fn borrow_mut(&self) -> Option> { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Ref` is never constructed [INFO] [stderr] --> src/refcell.rs:55:12 [INFO] [stderr] | [INFO] [stderr] 55 | pub struct Ref<'refcell, T> { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `RefMut` is never constructed [INFO] [stderr] --> src/refcell.rs:81:12 [INFO] [stderr] | [INFO] [stderr] 81 | pub struct RefMut<'refcell, T> { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stderr] --> src/rc.rs:55:13 [INFO] [stderr] | [INFO] [stderr] 55 | drop(inner); [INFO] [stderr] | ^^^^^-----^ [INFO] [stderr] | | [INFO] [stderr] | argument has type `&RcInner` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dropping_references)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the expression or result [INFO] [stderr] | [INFO] [stderr] 55 - drop(inner); [INFO] [stderr] 55 + let _ = inner; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `rspointers` (bin "rspointers" test) generated 7 warnings (run `cargo fix --bin "rspointers" -p rspointers --tests` to apply 1 suggestion) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/build/rspointers/98e4d9e4841b0175/out/rspointers-98e4d9e4841b0175) [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test cell::tests::not_bad ... ok [INFO] [stdout] test rc::tests::test_rc ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb", kill_on_drop: false }` [INFO] [stdout] a7edf941953e8ceeedacac214236b673832b1d4675150a9b771be1f72727aaeb