[INFO] fetching crate rclist 0.0.1...
[INFO] checking rclist-0.0.1 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate rclist 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rclist 0.0.1 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rclist 0.0.1
[INFO] finished tweaking crates.io crate rclist 0.0.1
[INFO] tweaked toml for crates.io crate rclist 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "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/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a260eb99756d54752b232038f153831be3f86a7f3f51fe5cd3cfbcd242d7c9b5
[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" "a260eb99756d54752b232038f153831be3f86a7f3f51fe5cd3cfbcd242d7c9b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a260eb99756d54752b232038f153831be3f86a7f3f51fe5cd3cfbcd242d7c9b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a260eb99756d54752b232038f153831be3f86a7f3f51fe5cd3cfbcd242d7c9b5", kill_on_drop: false }`
[INFO] [stdout] a260eb99756d54752b232038f153831be3f86a7f3f51fe5cd3cfbcd242d7c9b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a895093a8378fab8e465ac30a0c3af743f037ad4172cd520f80d56e6c3b07b0
[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" "6a895093a8378fab8e465ac30a0c3af743f037ad4172cd520f80d56e6c3b07b0", kill_on_drop: false }`
[INFO] [stderr]     Checking rclist v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `downgrade` found for reference `&Rc<T>` in the current scope
[INFO] [stdout]   --> src/lib.rs:31:50
[INFO] [stdout]    |
[INFO] [stdout] 31 |             &Link::Strong(ref x) => Link::Weak(x.downgrade()),
[INFO] [stdout]    |                                                --^^^^^^^^^
[INFO] [stdout]    |                                                | |
[INFO] [stdout]    |                                                | this is an associated function, not a method
[INFO] [stdout]    |                                                help: use associated function syntax instead: `Rc::<T>::downgrade`
[INFO] [stdout]    |
[INFO] [stdout]    = note: found the following associated functions; to be used as methods, functions must have a `self` parameter
[INFO] [stdout]    = note: the candidate is defined in an impl for the type `Rc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `downgrade` found for reference `&Rc<T>` in the current scope
[INFO] [stdout]   --> src/lib.rs:31:50
[INFO] [stdout]    |
[INFO] [stdout] 31 |             &Link::Strong(ref x) => Link::Weak(x.downgrade()),
[INFO] [stdout]    |                                                --^^^^^^^^^
[INFO] [stdout]    |                                                | |
[INFO] [stdout]    |                                                | this is an associated function, not a method
[INFO] [stdout]    |                                                help: use associated function syntax instead: `Rc::<T>::downgrade`
[INFO] [stdout]    |
[INFO] [stdout]    = note: found the following associated functions; to be used as methods, functions must have a `self` parameter
[INFO] [stdout]    = note: the candidate is defined in an impl for the type `Rc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<u8> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:12:41
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let vempty : Vec<u8> = empty.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                         ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<u8>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rclist`
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<u8>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:12:50
[INFO] [stdout]     |
[INFO] [stdout] 12  |       let vempty : Vec<u8> = empty.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                                    ^^^^^^ method cannot be called on `Cloned<RcListIter<u8>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<u8> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:13:34
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let v1 : Vec<u8> = s1.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                  ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<u8>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<u8>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:13:43
[INFO] [stdout]     |
[INFO] [stdout] 13  |       let v1 : Vec<u8> = s1.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                             ^^^^^^ method cannot be called on `Cloned<RcListIter<u8>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<u8> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let v2 : Vec<u8> = s2.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                  ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<u8>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<u8>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:14:43
[INFO] [stdout]     |
[INFO] [stdout] 14  |       let v2 : Vec<u8> = s2.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                             ^^^^^^ method cannot be called on `Cloned<RcListIter<u8>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<&str> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:30:43
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let vempty : Vec<&str> = empty.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                           ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<&str>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<&str>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:30:52
[INFO] [stdout]     |
[INFO] [stdout] 30  |       let vempty : Vec<&str> = empty.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                                      ^^^^^^ method cannot be called on `Cloned<RcListIter<&str>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<_ as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<&str> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<&str> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:31:36
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let v1 : Vec<&str> = s1.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                    ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<&str>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<&str>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:31:45
[INFO] [stdout]     |
[INFO] [stdout] 31  |       let v1 : Vec<&str> = s1.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                               ^^^^^^ method cannot be called on `Cloned<RcListIter<&str>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<_ as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<&str> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<&str> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:32:36
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let v2 : Vec<&str> = s2.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                    ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<&str>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<&str>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:32:45
[INFO] [stdout]     |
[INFO] [stdout] 32  |       let v2 : Vec<&str> = s2.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                               ^^^^^^ method cannot be called on `Cloned<RcListIter<&str>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<_ as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<&str> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<&str>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<String> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:49:45
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let vempty : Vec<String> = empty.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                             ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<String>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<String>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:49:54
[INFO] [stdout]     |
[INFO] [stdout] 49  |       let vempty : Vec<String> = empty.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                                        ^^^^^^ method cannot be called on `Cloned<RcListIter<String>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<_ as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<String> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<String> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:50:38
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let v1 : Vec<String> = s1.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                      ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<String>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<String>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:50:47
[INFO] [stdout]     |
[INFO] [stdout] 50  |       let v1 : Vec<String> = s1.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                                 ^^^^^^ method cannot be called on `Cloned<RcListIter<String>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<_ as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<String> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<String> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:51:38
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let v2 : Vec<String> = s2.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                      ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<String>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<String>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:51:47
[INFO] [stdout]     |
[INFO] [stdout] 51  |       let v2 : Vec<String> = s2.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                                 ^^^^^^ method cannot be called on `Cloned<RcListIter<String>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<_ as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<String> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<String>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<u8> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let v1 : Vec<u8> = s1.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                  ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<u8>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<u8>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:74:43
[INFO] [stdout]     |
[INFO] [stdout] 74  |       let v1 : Vec<u8> = s1.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                             ^^^^^^ method cannot be called on `Cloned<RcListIter<u8>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<RcListIter<u8> as std::iter::Iterator>::Item == &_`
[INFO] [stdout]   --> src/test.rs:75:34
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let v2 : Vec<u8> = s2.iter().cloned().cloned().collect();
[INFO] [stdout]    |                                  ^^^^^^ expected struct `Rc`, found reference
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Node<u8>>`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `cloned` exists for struct `Cloned<RcListIter<u8>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/test.rs:75:43
[INFO] [stdout]     |
[INFO] [stdout] 75  |       let v2 : Vec<u8> = s2.iter().cloned().cloned().collect();
[INFO] [stdout]     |                                             ^^^^^^ method cannot be called on `Cloned<RcListIter<u8>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:103:1
[INFO] [stdout]     |
[INFO] [stdout] 103 |   pub struct RcListIter<T: 'static> {
[INFO] [stdout]     |   --------------------------------- doesn't satisfy `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `<RcListIter<u8> as std::iter::Iterator>::Item = &_`
[INFO] [stdout]             which is required by `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             `Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout]             which is required by `&mut Cloned<RcListIter<u8>>: std::iter::Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 23 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0271, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0271`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6a895093a8378fab8e465ac30a0c3af743f037ad4172cd520f80d56e6c3b07b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a895093a8378fab8e465ac30a0c3af743f037ad4172cd520f80d56e6c3b07b0", kill_on_drop: false }`
[INFO] [stdout] 6a895093a8378fab8e465ac30a0c3af743f037ad4172cd520f80d56e6c3b07b0