[INFO] cloning repository https://github.com/anthonykimani/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anthonykimani/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthonykimani%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthonykimani%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2650dd74e22aeb551d26bdca133bc7b4b2a4967a
[INFO] checking anthonykimani/rustlings against try#d7b15db413fd2070daa09a2c5b7f2ab38417429f for pr-144544
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthonykimani%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/anthonykimani/rustlings
[INFO] finished tweaking git repo https://github.com/anthonykimani/rustlings
[INFO] tweaked toml for git repo https://github.com/anthonykimani/rustlings written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/anthonykimani/rustlings on toolchain d7b15db413fd2070daa09a2c5b7f2ab38417429f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7b15db413fd2070daa09a2c5b7f2ab38417429f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7b15db413fd2070daa09a2c5b7f2ab38417429f" "generate-lockfile" "--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 anthonykimani/rustlings against try#d7b15db413fd2070daa09a2c5b7f2ab38417429f for pr-144544
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthonykimani%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/anthonykimani/rustlings
[INFO] finished tweaking git repo https://github.com/anthonykimani/rustlings
[INFO] tweaked toml for git repo https://github.com/anthonykimani/rustlings written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/anthonykimani/rustlings on toolchain d7b15db413fd2070daa09a2c5b7f2ab38417429f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7b15db413fd2070daa09a2c5b7f2ab38417429f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7b15db413fd2070daa09a2c5b7f2ab38417429f" "generate-lockfile" "--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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7b15db413fd2070daa09a2c5b7f2ab38417429f" "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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+d7b15db413fd2070daa09a2c5b7f2ab38417429f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 199bb5db5cffd87e40bfbd65eac2fe6796b43db5b4947166c6996ca7bff35f4e
[INFO] running `Command { std: "docker" "start" "-a" "199bb5db5cffd87e40bfbd65eac2fe6796b43db5b4947166c6996ca7bff35f4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "199bb5db5cffd87e40bfbd65eac2fe6796b43db5b4947166c6996ca7bff35f4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "199bb5db5cffd87e40bfbd65eac2fe6796b43db5b4947166c6996ca7bff35f4e", kill_on_drop: false }`
[INFO] [stdout] 199bb5db5cffd87e40bfbd65eac2fe6796b43db5b4947166c6996ca7bff35f4e
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+d7b15db413fd2070daa09a2c5b7f2ab38417429f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6654c39e63cf7a117a46c4f1e3fa7769cfc5f8ca01c22222db7ecaa52fa5472
[INFO] running `Command { std: "docker" "start" "-a" "f6654c39e63cf7a117a46c4f1e3fa7769cfc5f8ca01c22222db7ecaa52fa5472", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> exercises/16_lifetimes/lifetimes3.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     author: &str,
[INFO] [stdout]   |             ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ struct Book<'a> {
[INFO] [stdout] 5 ~     author: &'a str,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> exercises/16_lifetimes/lifetimes3.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     title: &str,
[INFO] [stdout]   |            ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ struct Book<'a> {
[INFO] [stdout] 5 |     author: &str,
[INFO] [stdout] 6 ~     title: &'a str,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found `,`
[INFO] [stdout]   --> exercises/15_traits/traits4.rs:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn compare_license_types(software1: ???, software2: ???) -> bool {
[INFO] [stdout]    |                                        ^ expected identifier
[INFO] [stdout]    |
[INFO] [stdout] help: remove this comma
[INFO] [stdout]    |
[INFO] [stdout] 14 - fn compare_license_types(software1: ???, software2: ???) -> bool {
[INFO] [stdout] 14 + fn compare_license_types(software1: ??? software2: ???) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected a trait, found type
[INFO] [stdout]   --> exercises/15_traits/traits4.rs:14:39
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn compare_license_types(software1: ???, software2: ???) -> bool {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found `)`
[INFO] [stdout]   --> exercises/15_traits/traits4.rs:14:56
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn compare_license_types(software1: ???, software2: ???) -> bool {
[INFO] [stdout]    |                                                        ^ expected identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "lifetimes3" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0425]: cannot find value `software1` in this scope
[INFO] [stdout]   --> exercises/15_traits/traits4.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     software1.licensing_info() == software2.licensing_info()
[INFO] [stdout]    |     ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `software2` in this scope
[INFO] [stdout]   --> exercises/15_traits/traits4.rs:15:35
[INFO] [stdout]    |
[INFO] [stdout] 15 |     software1.licensing_info() == software2.licensing_info()
[INFO] [stdout]    |                                   ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> exercises/16_lifetimes/lifetimes3.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     author: &str,
[INFO] [stdout]   |             ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ struct Book<'a> {
[INFO] [stdout] 5 ~     author: &'a str,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> exercises/16_lifetimes/lifetimes3.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     title: &str,
[INFO] [stdout]   |            ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ struct Book<'a> {
[INFO] [stdout] 5 |     author: &str,
[INFO] [stdout] 6 ~     title: &'a str,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `fruit` in module `delicious_snacks`
[INFO] [stdout]   --> exercises/10_modules/modules2.rs:23:27
[INFO] [stdout]    |
[INFO] [stdout] 23 |         delicious_snacks::fruit,
[INFO] [stdout]    |                           ^^^^^ not found in `delicious_snacks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `veggie` in module `delicious_snacks`
[INFO] [stdout]   --> exercises/10_modules/modules2.rs:24:27
[INFO] [stdout]    |
[INFO] [stdout] 24 |         delicious_snacks::veggie,
[INFO] [stdout]    |                           ^^^^^^ not found in `delicious_snacks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros1.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Vec<_>`
[INFO] [stdout]   --> exercises/20_threads/threads1.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut results = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^^^^   ---------- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `results` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut results: Vec<T> = Vec::new();
[INFO] [stdout]    |                    ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "traits4" test) due to 5 previous errors
[INFO] [stderr] error: could not compile `exercises` (bin "lifetimes3") due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros1.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     my_macro();
[INFO] [stdout]   |     ^^^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 9 |     my_macro!();
[INFO] [stdout]   |             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "macros1") due to 1 previous error; 1 warning emitted
[INFO] [stderr] error: could not compile `exercises` (bin "modules2") due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "threads1" test) due to 1 previous error
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/18_iterators/iterators5.rs:28:72
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn count_iterator(map: &HashMap<String, Progress>, value: Progress) -> usize {
[INFO] [stdout]    |    --------------                                                      ^^^^^ expected `usize`, 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/18_iterators/iterators5.rs:47:92
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn count_collection_iterator(collection: &[HashMap<String, Progress>], value: Progress) -> usize {
[INFO] [stdout]    |    -------------------------                                                               ^^^^^ expected `usize`, found `()`
[INFO] [stdout]    |    |
[INFO] [stdout]    |    implicitly returns `()` as its body has no tail or `return` expression
[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 "iterators5" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f6654c39e63cf7a117a46c4f1e3fa7769cfc5f8ca01c22222db7ecaa52fa5472", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6654c39e63cf7a117a46c4f1e3fa7769cfc5f8ca01c22222db7ecaa52fa5472", kill_on_drop: false }`
[INFO] [stdout] f6654c39e63cf7a117a46c4f1e3fa7769cfc5f8ca01c22222db7ecaa52fa5472