[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<T> {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 5 |     value: UnsafeCell<T>,
[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<T> Cell<T> {
[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<T> {
[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<T> {
[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<T> Rc<T> {
[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<T> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 17 |     value: UnsafeCell<T>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     state: Cell<RefState>,
[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<T> RefCell<T> {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn borrow(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn borrow_mut(&self) -> Option<RefMut<'_, T>> {
[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<T>`
[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<T> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 17 |     value: UnsafeCell<T>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     state: Cell<RefState>,
[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<T> RefCell<T> {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn borrow(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn borrow_mut(&self) -> Option<RefMut<'_, T>> {
[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<T>`
[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<T> {
[INFO] [stderr]    |            ------- fields in this struct
[INFO] [stderr] 17 |     value: UnsafeCell<T>,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 18 |     state: Cell<RefState>,
[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<T> RefCell<T> {
[INFO] [stderr]    | ------------------ methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 29 |     pub fn borrow(&self) -> Option<Ref<'_, T>> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 43 |     pub fn borrow_mut(&self) -> Option<RefMut<'_, T>> {
[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<T>`
[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
