[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 master#1b8f2e46e14b08208a53585570edd9206374aae8 for pr-155418-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeorgefst%2Frustlings" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/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-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/georgefst/rustlings on toolchain 1b8f2e46e14b08208a53585570edd9206374aae8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1b8f2e46e14b08208a53585570edd9206374aae8" "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" "+1b8f2e46e14b08208a53585570edd9206374aae8" "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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1b8f2e46e14b08208a53585570edd9206374aae8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebc24c42c776e54ec7898f7f44be184396ce04ebc98186382d71df14003394bb
[INFO] running `Command { std: "docker" "start" "-a" "ebc24c42c776e54ec7898f7f44be184396ce04ebc98186382d71df14003394bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebc24c42c776e54ec7898f7f44be184396ce04ebc98186382d71df14003394bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc24c42c776e54ec7898f7f44be184396ce04ebc98186382d71df14003394bb", kill_on_drop: false }`
[INFO] [stdout] ebc24c42c776e54ec7898f7f44be184396ce04ebc98186382d71df14003394bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1b8f2e46e14b08208a53585570edd9206374aae8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 934fd99db09f07cd7b61503e95d6cef1518261c4fe3fd2f9452cb169883e0d64
[INFO] running `Command { std: "docker" "start" "-a" "934fd99db09f07cd7b61503e95d6cef1518261c4fe3fd2f9452cb169883e0d64", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[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] For more information about this error, try `rustc --explain E0046`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "traits1") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: cannot find macro `my_macro` in this scope
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     my_macro!();
[INFO] [stdout]   |     ^^^^^^^^ consider moving the definition of `my_macro` before this call
[INFO] [stdout]   |
[INFO] [stdout] note: a macro with the same name exists, but it appears later
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `my_macro` in this scope
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     my_macro!();
[INFO] [stdout]   |     ^^^^^^^^ consider moving the definition of `my_macro` before this call
[INFO] [stdout]   |
[INFO] [stdout] note: a macro with the same name exists, but it appears later
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros2.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "macros2" test) due to 1 previous error; 1 warning emitted
[INFO] [stdout] error[E0596]: cannot borrow `vec` as mutable, as it is not declared as mutable
[INFO] [stdout]  --> exercises/06_move_semantics/move_semantics3.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     vec.push(88);
[INFO] [stdout]   |     ^^^ cannot borrow as mutable
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/23_conversions/from_into.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn from(s: &str) -> Self {}
[INFO] [stdout]    |        ----             ^^^^ expected `Person`, found `()`
[INFO] [stdout]    |        |
[INFO] [stdout]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/13_error_handling/errors1.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Ok("Hi! My name is Beyoncé"),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Option<&str>`, found `Result<&str, _>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Option<&str>`
[INFO] [stdout]               found enum `Result<&str, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "move_semantics3") due to 1 previous error
[INFO] [stderr] error: could not compile `exercises` (bin "macros2") due to 1 previous error; 1 warning emitted
[INFO] [stderr] error: could not compile `exercises` (bin "from_into") due to 1 previous error
[INFO] [stdout] error[E0599]: no method named `map_err` found for enum `Option<T>` in the current scope
[INFO] [stdout]   --> exercises/13_error_handling/errors1.rs:37:18
[INFO] [stdout]    |
[INFO] [stdout] 35 | /             generate_nametag_text(String::new())
[INFO] [stdout] 36 | |                 .as_ref()
[INFO] [stdout] 37 | |                 .map_err(|e| e.as_str()),
[INFO] [stdout]    | |_________________-^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `map_or` with a similar name, but with different arguments
[INFO] [stdout]   --> /rustc/1b8f2e46e14b08208a53585570edd9206374aae8/library/core/src/option.rs:1224:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "errors1" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "934fd99db09f07cd7b61503e95d6cef1518261c4fe3fd2f9452cb169883e0d64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "934fd99db09f07cd7b61503e95d6cef1518261c4fe3fd2f9452cb169883e0d64", kill_on_drop: false }`
[INFO] [stdout] 934fd99db09f07cd7b61503e95d6cef1518261c4fe3fd2f9452cb169883e0d64
