[INFO] cloning repository https://github.com/mhashimm/100-exercises-to-learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mhashimm/100-exercises-to-learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhashimm%2F100-exercises-to-learn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhashimm%2F100-exercises-to-learn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8791feb495a96e11b84fe6445ced2c12fe5d549a
[INFO] testing mhashimm/100-exercises-to-learn-rust against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhashimm%2F100-exercises-to-learn-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mhashimm/100-exercises-to-learn-rust
[INFO] finished tweaking git repo https://github.com/mhashimm/100-exercises-to-learn-rust
[INFO] tweaked toml for git repo https://github.com/mhashimm/100-exercises-to-learn-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mhashimm/100-exercises-to-learn-rust on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mhashimm/100-exercises-to-learn-rust 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 224a0d194d0aa4500ba19ab72008fff79c5993baf9605a192910c5dd43ee8717
[INFO] running `Command { std: "docker" "start" "-a" "224a0d194d0aa4500ba19ab72008fff79c5993baf9605a192910c5dd43ee8717", kill_on_drop: false }`
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[INFO] [stdout] 224a0d194d0aa4500ba19ab72008fff79c5993baf9605a192910c5dd43ee8717
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "be2791b1378f5a68de60802a4748521153dc1c71fd8147be61587c2de3ea475c", kill_on_drop: false }`
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[INFO] [stderr]    Compiling jiff v0.2.15
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.10.1
[INFO] [stderr]    Compiling http-range-header v0.4.2
[INFO] [stderr]    Compiling pest_meta v2.8.3
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling num-order v1.2.0
[INFO] [stderr]    Compiling terminal_size v0.4.3
[INFO] [stderr]    Compiling tempfile v3.23.0
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling clap_builder v4.5.50
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling iana-time-zone v0.1.64
[INFO] [stderr]    Compiling matchit v0.8.4
[INFO] [stderr]    Compiling notify-debouncer-mini v0.6.0
[INFO] [stderr]    Compiling serde_path_to_error v0.1.20
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling pathdiff v0.2.3
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling pulldown-cmark v0.11.3
[INFO] [stderr]    Compiling unicode-width v0.2.2
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.11.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling as_cast v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/10_as_casting)
[INFO] [stderr]    Compiling getopts v0.2.24
[INFO] [stderr]    Compiling threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/01_threads)
[INFO] [stderr]    Compiling visibility v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/04_visibility)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> exercises/07_threads/01_threads/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | 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/01_threads/src/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | 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 regex v1.12.2
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     struct Ticket {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl Ticket {
[INFO] [stdout]   |     ----------- associated function in this implementation
[INFO] [stdout] 9 |         fn new(title: String, description: String, status: String) -> Ticket {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bstr v1.12.0
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling destructor v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/11_destructor)
[INFO] [stderr]    Compiling intro_08 v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/00_intro)
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/08_futures/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 sized v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/08_sized)
[INFO] [stderr]    Compiling welcome_00 v0.1.0 (/opt/rustwide/workdir/exercises/01_intro/00_welcome)
[INFO] [stderr]    Compiling intro_07 v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/00_intro)
[INFO] [stdout] warning: function `outro` is never used
[INFO] [stdout]  --> exercises/03_ticket_v1/11_destructor/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn outro() -> &'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 intro_01 v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/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] [stdout] error[E0277]: the size for values of type `str` cannot be known at compilation time
[INFO] [stdout]  --> exercises/04_traits/08_sized/src/lib.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 |     std::mem::size_of::<str>();
[INFO] [stdout]   |                         ^^^ doesn't have a size known at compile-time
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `Sized` is not implemented for `str`
[INFO] [stdout] note: required by an implicit `Sized` bound in `std::mem::size_of`
[INFO] [stdout]  --> /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/core/src/mem/mod.rs:344:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sized` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "be2791b1378f5a68de60802a4748521153dc1c71fd8147be61587c2de3ea475c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be2791b1378f5a68de60802a4748521153dc1c71fd8147be61587c2de3ea475c", kill_on_drop: false }`
[INFO] [stdout] be2791b1378f5a68de60802a4748521153dc1c71fd8147be61587c2de3ea475c
