[INFO] cloning repository https://github.com/isaacv-pl/rustlings-fork
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/isaacv-pl/rustlings-fork" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisaacv-pl%2Frustlings-fork", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisaacv-pl%2Frustlings-fork'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4800f47c95e777afd7cefff67adf6d3c0dea1584
[INFO] testing isaacv-pl/rustlings-fork against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisaacv-pl%2Frustlings-fork" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
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[INFO] started tweaking git repo https://github.com/isaacv-pl/rustlings-fork
[INFO] finished tweaking git repo https://github.com/isaacv-pl/rustlings-fork
[INFO] tweaked toml for git repo https://github.com/isaacv-pl/rustlings-fork written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/isaacv-pl/rustlings-fork on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/isaacv-pl/rustlings-fork 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 366272aa2b922331dfc46d836c783d6e50e116c9396c2b142eaced1d61556a09
[INFO] running `Command { std: "docker" "start" "-a" "366272aa2b922331dfc46d836c783d6e50e116c9396c2b142eaced1d61556a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "366272aa2b922331dfc46d836c783d6e50e116c9396c2b142eaced1d61556a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "366272aa2b922331dfc46d836c783d6e50e116c9396c2b142eaced1d61556a09", kill_on_drop: false }`
[INFO] [stdout] 366272aa2b922331dfc46d836c783d6e50e116c9396c2b142eaced1d61556a09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ba3319dcc87f8b04b8f09c54cef7b10dffaad138182631f4649986c5c97d3f2
[INFO] running `Command { std: "docker" "start" "-a" "4ba3319dcc87f8b04b8f09c54cef7b10dffaad138182631f4649986c5c97d3f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0046]: not all trait items implemented, missing: `licensing_info`
[INFO] [stdout]   --> exercises/15_traits/traits3.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn licensing_info(&self) -> String;
[INFO] [stdout]    |     ----------------------------------- `licensing_info` from trait
[INFO] [stdout] ...
[INFO] [stdout] 17 | impl Licensed for SomeSoftware {} // Don't edit this line.
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `licensing_info` in implementation
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0046]: not all trait items implemented, missing: `licensing_info`
[INFO] [stdout]   --> exercises/15_traits/traits3.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn licensing_info(&self) -> String;
[INFO] [stdout]    |     ----------------------------------- `licensing_info` from trait
[INFO] [stdout] ...
[INFO] [stdout] 18 | impl Licensed for OtherSoftware {} // Don't edit this line.
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `licensing_info` 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 "traits3") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn divide(a: i64, b: i64) -> Result<i64, DivisionError> {
[INFO] [stdout]    |           ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn divide(a: i64, b: i64) -> Result<i64, DivisionError> {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `division_results`
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let division_results = numbers.into_iter().map(|n| divide(n, 27));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_division_results`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `division_results`
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let division_results = numbers.into_iter().map(|n| divide(n, 27));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_division_results`
[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: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[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "as_ref_mut") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "4ba3319dcc87f8b04b8f09c54cef7b10dffaad138182631f4649986c5c97d3f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ba3319dcc87f8b04b8f09c54cef7b10dffaad138182631f4649986c5c97d3f2", kill_on_drop: false }`
[INFO] [stdout] 4ba3319dcc87f8b04b8f09c54cef7b10dffaad138182631f4649986c5c97d3f2
