[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 1.98.0-beta.1 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-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/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-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hhieunnd/100-exercises on toolchain 1.98.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.1" "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" "+1.98.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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] 0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484
[INFO] running `Command { std: "docker" "start" "0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484", 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" "0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484", 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" "0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling common v0.1.0 (/opt/rustwide/workdir/helpers/common)
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
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[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling rustix v0.38.34
[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 sha1 v0.10.6
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling indexmap v2.3.0
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling mio v1.0.1
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[INFO] [stderr]    Compiling want v0.3.1
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[INFO] [stderr]    Compiling filetime v0.2.23
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling crossbeam-channel v0.5.13
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[INFO] [stderr]    Compiling fastrand v2.1.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.60
[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 shlex v1.3.0
[INFO] [stderr]    Compiling unicode-width v0.1.13
[INFO] [stderr]    Compiling pulldown-cmark v0.11.0
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling bstr v1.10.0
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.11.0
[INFO] [stderr]    Compiling env_filter v0.1.2
[INFO] [stderr]    Compiling globset v0.4.14
[INFO] [stderr]    Compiling env_logger v0.11.5
[INFO] [stderr]    Compiling opener v0.7.1
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling ignore v0.4.22
[INFO] [stderr]    Compiling pulldown-cmark-to-cmark v15.0.1
[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 deps v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/11_dependencies)
[INFO] [stderr]    Compiling leaking v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/03_leak)
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> exercises/05_ticket_v2/11_dependencies/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use anyhow::Error;
[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: `std::thread`
[INFO] [stdout]  --> exercises/07_threads/03_leak/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::thread;
[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 variable: `v`
[INFO] [stdout]  --> exercises/07_threads/03_leak/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn sum(v: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling intro_04 v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/00_intro)
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling modules v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/03_modules)
[INFO] [stderr]    Compiling outro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/12_outro)
[INFO] [stderr]    Compiling references_in_memory v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/10_references_in_memory)
[INFO] [stderr]    Compiling overflow v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/08_overflow)
[INFO] [stdout] warning: fields `title`, `description`, and `status` are never read
[INFO] [stdout]  --> exercises/03_ticket_v1/10_references_in_memory/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Ticket {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     description: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     status: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling resizing v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/03_resizing)
[INFO] [stderr]    Compiling setters v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/07_setters)
[INFO] [stderr]    Compiling trait_ v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/01_trait)
[INFO] [stdout] warning: trait `IsEven` is never used
[INFO] [stdout]  --> exercises/04_traits/01_trait/src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | trait IsEven {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling copy v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/12_copy)
[INFO] [stderr]    Compiling intro_07 v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/00_intro)
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/07_threads/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling str_slice v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/06_str_slice)
[INFO] [stderr]    Compiling intro_01 v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/00_intro)
[INFO] [stderr]    Compiling interior_mutability v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/06_interior_mutability)
[INFO] [stdout] error: expected type, found `"not yet implemented"`
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     counter: 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] error: expected type, found `"not yet implemented"`
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:13:35
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(value: T, counter: todo!()) -> Self {
[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: `std::cell::RefCell`
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cell::RefCell;
[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: `std::rc::Rc`
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interior_mutability` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484", kill_on_drop: false }`
[INFO] [stdout] 0fd47d085e9219de2ffffd12db88746e7514b8d1c90b386c4128aa0d5ec84484
