[INFO] cloning repository https://github.com/georgefst/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/georgefst/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeorgefst%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeorgefst%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ed365979c8c36e72d005049f308d0048b141706
[INFO] checking georgefst/rustlings against try#e5b0618d996a6a3941e423fd3e170737b8dbdc92 for pr-151822
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeorgefst%2Frustlings" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/georgefst/rustlings
[INFO] finished tweaking git repo https://github.com/georgefst/rustlings
[INFO] tweaked toml for git repo https://github.com/georgefst/rustlings written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/georgefst/rustlings on toolchain e5b0618d996a6a3941e423fd3e170737b8dbdc92
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/georgefst/rustlings 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" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking georgefst/rustlings against try#e5b0618d996a6a3941e423fd3e170737b8dbdc92 for pr-151822
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeorgefst%2Frustlings" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/georgefst/rustlings
[INFO] finished tweaking git repo https://github.com/georgefst/rustlings
[INFO] tweaked toml for git repo https://github.com/georgefst/rustlings written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/georgefst/rustlings on toolchain e5b0618d996a6a3941e423fd3e170737b8dbdc92
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/georgefst/rustlings 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" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc9748d9f1dfba98023fd434c3682a32d71ac35967937cb9b5fb4500b56d0009
[INFO] running `Command { std: "docker" "start" "-a" "bc9748d9f1dfba98023fd434c3682a32d71ac35967937cb9b5fb4500b56d0009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc9748d9f1dfba98023fd434c3682a32d71ac35967937cb9b5fb4500b56d0009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc9748d9f1dfba98023fd434c3682a32d71ac35967937cb9b5fb4500b56d0009", kill_on_drop: false }`
[INFO] [stdout] bc9748d9f1dfba98023fd434c3682a32d71ac35967937cb9b5fb4500b56d0009
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+e5b0618d996a6a3941e423fd3e170737b8dbdc92" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb2824ffac4706afe5df8e4ee899549e0aec02bf0b1eed6e1024d4f91fabfb0b
[INFO] running `Command { std: "docker" "start" "-a" "cb2824ffac4706afe5df8e4ee899549e0aec02bf0b1eed6e1024d4f91fabfb0b", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0597]: `string2` does not live long enough
[INFO] [stdout]   --> exercises/16_lifetimes/lifetimes2.rs:17:36
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let string2 = String::from("xyz");
[INFO] [stdout]    |             ------- binding `string2` declared here
[INFO] [stdout] 17 |         result = longest(&string1, &string2);
[INFO] [stdout]    |                                    ^^^^^^^^ borrowed value does not live long enough
[INFO] [stdout] 18 |     }
[INFO] [stdout]    |     - `string2` dropped here while still borrowed
[INFO] [stdout] 19 |     println!("The longest string is '{result}'");
[INFO] [stdout]    |                                       ------ borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0597`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "lifetimes2") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `as_ref` found for type parameter `T` in the current scope
[INFO] [stdout]  --> exercises/23_conversions/as_ref_mut.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn byte_counter<T>(arg: T) -> usize {
[INFO] [stdout]   |                 - method `as_ref` not found for this type parameter
[INFO] [stdout] 9 |     arg.as_ref().len()
[INFO] [stdout]   |         ^^^^^^ method not found in `T`
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the type parameter is bounded by the trait
[INFO] [stdout] help: the following trait defines an item `as_ref`, perhaps you need to restrict type parameter `T` with it:
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn byte_counter<T: AsRef</* T */>>(arg: T) -> usize {
[INFO] [stdout]   |                  ++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> exercises/09_strings/strings1.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn current_favorite_color() -> String {
[INFO] [stdout]   |                                ------ expected `String` because of return type
[INFO] [stdout] 3 |     "blue"
[INFO] [stdout]   |     ^^^^^^ expected `String`, found `&str`
[INFO] [stdout]   |
[INFO] [stdout] help: try using a conversion method
[INFO] [stdout]   |
[INFO] [stdout] 3 |     "blue".to_string()
[INFO] [stdout]   |           ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_ref` found for type parameter `T` in the current scope
[INFO] [stdout]   --> exercises/23_conversions/as_ref_mut.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn char_counter<T>(arg: T) -> usize {
[INFO] [stdout]    |                 - method `as_ref` not found for this type parameter
[INFO] [stdout] 15 |     arg.as_ref().chars().count()
[INFO] [stdout]    |         ^^^^^^ method not found in `T`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the type parameter is bounded by the trait
[INFO] [stdout] help: the following trait defines an item `as_ref`, perhaps you need to restrict type parameter `T` with it:
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn char_counter<T: AsRef</* T */>>(arg: T) -> usize {
[INFO] [stdout]    |                  ++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]   --> exercises/23_conversions/as_ref_mut.rs:20:14
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn num_sq<T>(arg: &mut T) {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> exercises/09_strings/strings1.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn current_favorite_color() -> String {
[INFO] [stdout]   |                                ------ expected `String` because of return type
[INFO] [stdout] 3 |     "blue"
[INFO] [stdout]   |     ^^^^^^ expected `String`, found `&str`
[INFO] [stdout]   |
[INFO] [stdout] help: try using a conversion method
[INFO] [stdout]   |
[INFO] [stdout] 3 |     "blue".to_string()
[INFO] [stdout]   |           ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "as_ref_mut") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] error: could not compile `exercises` (bin "strings1") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     placeholder("blue");
[INFO] [stdout]    |     ^^^^^^^^^^^ ------ unexpected argument of type `&'static str`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 16 -     placeholder("blue");
[INFO] [stdout] 16 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "strings1" test) due to 1 previous error
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/06_move_semantics/move_semantics5.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn string_uppercase(mut data: &String) {
[INFO] [stdout]    |                               ------- expected due to this parameter type
[INFO] [stdout] 13 |     data = data.to_uppercase();
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^ expected `&String`, found `String`
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to mutate the pointed at value being passed in, instead of changing the reference in the local binding
[INFO] [stdout]    |
[INFO] [stdout] 12 ~ fn string_uppercase(data: &mut String) {
[INFO] [stdout] 13 ~     *data = data.to_uppercase();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0046]: not all trait items implemented, missing: `append_bar`
[INFO] [stdout]  --> exercises/15_traits/traits1.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn append_bar(self) -> Self;
[INFO] [stdout]   |     ---------------------------- `append_bar` from trait
[INFO] [stdout] ...
[INFO] [stdout] 7 | impl AppendBar for String {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ missing `append_bar` in implementation
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     placeholder("red".to_string());
[INFO] [stdout]    |     ^^^^^^^^^^^ ----------------- unexpected argument of type `String`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 18 -     placeholder("red".to_string());
[INFO] [stdout] 18 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     placeholder(String::from("hi"));
[INFO] [stdout]    |     ^^^^^^^^^^^ ------------------ unexpected argument of type `String`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 20 -     placeholder(String::from("hi"));
[INFO] [stdout] 20 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     placeholder("rust is fun!".to_owned());
[INFO] [stdout]    |     ^^^^^^^^^^^ ------------------------- unexpected argument of type `String`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 22 -     placeholder("rust is fun!".to_owned());
[INFO] [stdout] 22 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     placeholder("nice weather".into());
[INFO] [stdout]    |     ^^^^^^^^^^^ --------------------- unexpected argument
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 24 -     placeholder("nice weather".into());
[INFO] [stdout] 24 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     placeholder(format!("Interpolation {}", "Station"));
[INFO] [stdout]    |     ^^^^^^^^^^^ -------------------------------------- unexpected argument of type `String`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 26 -     placeholder(format!("Interpolation {}", "Station"));
[INFO] [stdout] 26 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     placeholder(&String::from("abc")[0..1]);
[INFO] [stdout]    |     ^^^^^^^^^^^ -------------------------- unexpected argument of type `&str`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 30 -     placeholder(&String::from("abc")[0..1]);
[INFO] [stdout] 30 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     placeholder("  hello there ".trim());
[INFO] [stdout]    |     ^^^^^^^^^^^ ----------------------- unexpected argument of type `&str`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 32 -     placeholder("  hello there ".trim());
[INFO] [stdout] 32 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     placeholder("Happy Monday!".replace("Mon", "Tues"));
[INFO] [stdout]    |     ^^^^^^^^^^^ -------------------------------------- unexpected argument of type `String`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 34 -     placeholder("Happy Monday!".replace("Mon", "Tues"));
[INFO] [stdout] 34 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 0 arguments but 1 argument was supplied
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     placeholder("mY sHiFt KeY iS sTiCkY".to_lowercase());
[INFO] [stdout]    |     ^^^^^^^^^^^ --------------------------------------- unexpected argument of type `String`
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:2:4
[INFO] [stdout]    |
[INFO] [stdout]  2 | fn placeholder() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 36 -     placeholder("mY sHiFt KeY iS sTiCkY".to_lowercase());
[INFO] [stdout] 36 +     placeholder();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: borrow of moved value: `data`
[INFO] [stdout]   --> exercises/06_move_semantics/move_semantics5.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let data = "Rust is great!".to_string();
[INFO] [stdout]    |         ---- move occurs because `data` has type `String`, which does not implement the `Copy` trait
[INFO] [stdout] 20 |
[INFO] [stdout] 21 |     get_char(data);
[INFO] [stdout]    |              ---- value moved here
[INFO] [stdout] 22 |
[INFO] [stdout] 23 |     string_uppercase(&data);
[INFO] [stdout]    |                      ^^^^^ value borrowed here after move
[INFO] [stdout]    |
[INFO] [stdout] note: consider changing this parameter type in function `get_char` to borrow instead if owning the value isn't necessary
[INFO] [stdout]   --> exercises/06_move_semantics/move_semantics5.rs:7:19
[INFO] [stdout]    |
[INFO] [stdout]  7 | fn get_char(data: String) -> char {
[INFO] [stdout]    |    --------       ^^^^^^ this parameter takes ownership of the value
[INFO] [stdout]    |    |
[INFO] [stdout]    |    in this function
[INFO] [stdout] help: consider cloning the value if the performance cost is acceptable
[INFO] [stdout]    |
[INFO] [stdout] 21 |     get_char(data.clone());
[INFO] [stdout]    |                  ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0382.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Command`
[INFO] [stdout]   --> exercises/quizzes/quiz2.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     use super::Command;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0046`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "strings4") due to 10 previous errors
[INFO] [stderr] error: could not compile `exercises` (bin "move_semantics5") due to 2 previous errors
[INFO] [stdout] error[E0425]: cannot find function `transformer` in this scope
[INFO] [stdout]   --> exercises/quizzes/quiz2.rs:51:22
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let output = transformer(input);
[INFO] [stdout]    |                      ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "traits1" test) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "quiz2" test) due to 1 previous error; 1 warning emitted
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> exercises/13_error_handling/errors3.rs:23:46
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() {
[INFO] [stdout]    | --------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 23 |     let cost = total_cost(pretend_user_input)?;
[INFO] [stdout]    |                                              ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn main() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |           +++++++++++++++++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "errors3") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "cb2824ffac4706afe5df8e4ee899549e0aec02bf0b1eed6e1024d4f91fabfb0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb2824ffac4706afe5df8e4ee899549e0aec02bf0b1eed6e1024d4f91fabfb0b", kill_on_drop: false }`
[INFO] [stdout] cb2824ffac4706afe5df8e4ee899549e0aec02bf0b1eed6e1024d4f91fabfb0b