[INFO] cloning repository https://github.com/hhieunnd/100-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hhieunnd/100-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhhieunnd%2F100-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhhieunnd%2F100-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33cae7da30dc304877e08310f8ea60ee4e020c5c
[INFO] testing hhieunnd/100-exercises against 1.97.0-beta.6 for beta-1.98-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhhieunnd%2F100-exercises" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hhieunnd/100-exercises
[INFO] finished tweaking git repo https://github.com/hhieunnd/100-exercises
[INFO] tweaked toml for git repo https://github.com/hhieunnd/100-exercises written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hhieunnd/100-exercises on toolchain 1.97.0-beta.6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hhieunnd/100-exercises 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" "+1.97.0-beta.6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pulldown-cmark-to-cmark v15.0.1
[INFO] [stderr]   Downloaded headers-core v0.2.0
[INFO] [stderr]   Downloaded topological-sort v0.2.2
[INFO] [stderr]   Downloaded notify-debouncer-mini v0.4.1
[INFO] [stderr]   Downloaded pulldown-cmark-escape v0.11.0
[INFO] [stderr]   Downloaded pulldown-cmark-escape v0.10.1
[INFO] [stderr]   Downloaded filetime v0.2.23
[INFO] [stderr]   Downloaded data-encoding v2.6.0
[INFO] [stderr]   Downloaded env_filter v0.1.2
[INFO] [stderr]   Downloaded serde v1.0.204
[INFO] [stderr]   Downloaded tokio-tungstenite v0.21.0
[INFO] [stderr]   Downloaded opener v0.7.1
[INFO] [stderr]   Downloaded terminal_size v0.3.0
[INFO] [stderr]   Downloaded env_logger v0.11.5
[INFO] [stderr]   Downloaded tungstenite v0.21.0
[INFO] [stderr]   Downloaded maplit v1.0.2
[INFO] [stderr]   Downloaded serde_derive v1.0.204
[INFO] [stderr]   Downloaded tempfile v3.11.0
[INFO] [stderr]   Downloaded clap_complete v4.5.12
[INFO] [stderr]   Downloaded clap v4.5.13
[INFO] [stderr]   Downloaded headers v0.3.9
[INFO] [stderr]   Downloaded ammonia v4.0.0
[INFO] [stderr]   Downloaded markup5ever v0.12.1
[INFO] [stderr]   Downloaded indexmap v2.3.0
[INFO] [stderr]   Downloaded bimap v0.6.3
[INFO] [stderr]   Downloaded serde_json v1.0.122
[INFO] [stderr]   Downloaded mio v1.0.1
[INFO] [stderr]   Downloaded cc v1.1.7
[INFO] [stderr]   Downloaded handlebars v5.1.2
[INFO] [stderr]   Downloaded html5ever v0.27.0
[INFO] [stderr]   Downloaded warp v0.3.7
[INFO] [stderr]   Downloaded pulldown-cmark v0.10.3
[INFO] [stderr]   Downloaded dbus v0.9.7
[INFO] [stderr]   Downloaded elasticlunr-rs v3.0.2
[INFO] [stderr]   Downloaded pulldown-cmark v0.11.0
[INFO] [stderr]   Downloaded clap_builder v4.5.13
[INFO] [stderr]   Downloaded syn v2.0.72
[INFO] [stderr]   Downloaded object v0.36.2
[INFO] [stderr]   Downloaded unicode-width v0.1.13
[INFO] [stderr]   Downloaded libdbus-sys v0.2.5
[INFO] [stderr]   Downloaded mdbook v0.4.40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7
[INFO] running `Command { std: "docker" "start" "48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling common v0.1.0 (/opt/rustwide/workdir/helpers/common)
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling serde_json v1.0.122
[INFO] [stderr]    Compiling cpufeatures v0.2.12
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling indexmap v2.3.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling mio v1.0.1
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling data-encoding v2.6.0
[INFO] [stderr]    Compiling inotify v0.9.6
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling filetime v0.2.23
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-channel v0.5.13
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling pulldown-cmark v0.10.3
[INFO] [stderr]    Compiling tower-service v0.3.2
[INFO] [stderr]    Compiling headers v0.3.9
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling notify v6.1.1
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling iana-time-zone v0.1.60
[INFO] [stderr]    Compiling terminal_size v0.3.0
[INFO] [stderr]    Compiling fastrand v2.1.0
[INFO] [stderr]    Compiling clap_builder v4.5.13
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.10.1
[INFO] [stderr]    Compiling tempfile v3.11.0
[INFO] [stderr]    Compiling chrono v0.4.38
[INFO] [stderr]    Compiling notify-debouncer-mini v0.4.1
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling bstr v1.10.0
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling globset v0.4.14
[INFO] [stderr]    Compiling env_filter v0.1.2
[INFO] [stderr]    Compiling opener v0.7.1
[INFO] [stderr]    Compiling env_logger v0.11.5
[INFO] [stderr]    Compiling ignore v0.4.22
[INFO] [stderr]    Compiling pulldown-cmark v0.11.0
[INFO] [stderr]    Compiling unicode-width v0.1.13
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.11.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio v1.39.2
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling ticket_fields v0.1.0 (/opt/rustwide/workdir/helpers/ticket_fields)
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling pest v2.7.11
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling html5ever v0.27.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pest_meta v2.7.11
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling string_cache_codegen v0.5.2
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling clap_derive v4.5.13
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling tungstenite v0.21.0
[INFO] [stderr]    Compiling markup5ever v0.12.1
[INFO] [stderr]    Compiling pest_generator v2.7.11
[INFO] [stderr]    Compiling pin-project v1.1.5
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling lmao v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/10_packages)
[INFO] [stderr]    Compiling locks v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/11_locks)
[INFO] [stderr]    Compiling rwlock v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/12_rw_lock)
[INFO] [stdout] error: expected type, found `"not yet implemented"`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/store.rs:37:47
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn get(&self, id: TicketId) -> Option<todo!()> {
[INFO] [stdout]    |                                               ^^^^^^^
[INFO] [stdout]    |                                               |
[INFO] [stdout]    |                                               expected type
[INFO] [stdout]    |                                               in this macro invocation
[INFO] [stdout]    |                                               this macro call doesn't expand to a type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TrySendError`
[INFO] [stdout]  --> exercises/07_threads/12_rw_lock/src/lib.rs:3:59
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TrySendError`
[INFO] [stdout]  --> exercises/07_threads/11_locks/src/lib.rs:4:59
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/store.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         todo!();
[INFO] [stdout]    |         ------- any code following this expression is unreachable
[INFO] [stdout] 32 |         id
[INFO] [stdout]    |         ^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/12_rw_lock/src/lib.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/12_rw_lock/src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `locks` (lib) due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/lib.rs:79:47
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 let _ = response_channel.send(ticket);
[INFO] [stdout]    |                                          ---- ^^^^^^ expected `Option<Arc<Mutex<Ticket>>>`, found `Option<()>`
[INFO] [stdout]    |                                          |
[INFO] [stdout]    |                                          arguments to this method are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Option<Arc<std::sync::Mutex<Ticket>>>`
[INFO] [stdout]               found enum `Option<()>`
[INFO] [stdout] help: the return type of this call is `Option<()>` due to the type of the argument passed
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/lib.rs:79:25
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 let _ = response_channel.send(ticket);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^------^
[INFO] [stdout]    |                                               |
[INFO] [stdout]    |                                               this argument influences the return type of `send`
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sync/mpsc.rs:697:11
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `ticket`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/store.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let ticket = Ticket {
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ticket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/store.rs:37:23
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn get(&self, id: TicketId) -> Option<todo!()> {
[INFO] [stdout]    |                       ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7", kill_on_drop: false }`
[INFO] [stdout] 48b49b863280671e21752576f9a517e10f192e48afd216b8f873def6c84d19b7
