[INFO] cloning repository https://github.com/aconamos/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/aconamos/learn_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faconamos%2Flearn_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faconamos%2Flearn_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30368dd6cc2c9f359720dbaaa39127ae57bb3a8f
[INFO] checking aconamos/learn_rust against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faconamos%2Flearn_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aconamos/learn_rust
[INFO] finished tweaking git repo https://github.com/aconamos/learn_rust
[INFO] tweaked toml for git repo https://github.com/aconamos/learn_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aconamos/learn_rust on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aconamos/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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dtoa v1.0.10
[INFO] [stderr]   Downloaded ego-tree v0.6.3
[INFO] [stderr]   Downloaded tempfile v3.18.0
[INFO] [stderr]   Downloaded trpl v0.2.0
[INFO] [stderr]   Downloaded rustix v1.0.1
[INFO] [stderr]   Downloaded openssl-sys v0.9.106
[INFO] [stderr]   Downloaded openssl v0.10.71
[INFO] [stderr]   Downloaded linux-raw-sys v0.9.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14df62250e29410aa4923eb2394125bb006e690ee0211925a485c99a43d6f82f
[INFO] running `Command { std: "docker" "start" "-a" "14df62250e29410aa4923eb2394125bb006e690ee0211925a485c99a43d6f82f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14df62250e29410aa4923eb2394125bb006e690ee0211925a485c99a43d6f82f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14df62250e29410aa4923eb2394125bb006e690ee0211925a485c99a43d6f82f", kill_on_drop: false }`
[INFO] [stdout] 14df62250e29410aa4923eb2394125bb006e690ee0211925a485c99a43d6f82f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87e33002849f0e94103b487bb93df0ebf9d824df84a134fbc95df17ca49df8b7
[INFO] running `Command { std: "docker" "start" "-a" "87e33002849f0e94103b487bb93df0ebf9d824df84a134fbc95df17ca49df8b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]     Checking smallvec v1.14.0
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking writeable v0.5.5
[INFO] [stderr]    Compiling cc v1.2.16
[INFO] [stderr]     Checking litemap v0.7.5
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking http v1.2.0
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]     Checking new_debug_unreachable v1.0.6
[INFO] [stderr]     Checking icu_locid_transform_data v1.5.0
[INFO] [stderr]    Compiling openssl v0.10.71
[INFO] [stderr]     Checking icu_properties_data v1.5.0
[INFO] [stderr]     Checking hashbrown v0.15.2
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]     Checking phf_shared v0.11.3
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking write16 v1.0.0
[INFO] [stderr]     Checking utf16_iter v1.0.5
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking icu_normalizer_data v1.5.0
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]     Checking dtoa v1.0.10
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking servo_arc v0.3.0
[INFO] [stderr]     Checking rustls-pki-types v1.11.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking dtoa-short v0.3.5
[INFO] [stderr]     Checking encoding_rs v0.8.35
[INFO] [stderr]     Checking tendril v0.4.3
[INFO] [stderr]     Checking ego-tree v0.6.3
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking indexmap v2.7.1
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling openssl-sys v0.9.106
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]     Checking socket2 v0.5.8
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking tokio v1.44.0
[INFO] [stderr]     Checking string_cache v0.8.8
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling cssparser-macros v0.6.1
[INFO] [stderr]    Compiling html5ever v0.27.0
[INFO] [stderr]    Compiling derive_more v0.99.19
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.7.5
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]     Checking tokio-util v0.7.13
[INFO] [stderr]     Checking tokio-stream v0.1.17
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.7.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking zerovec v0.10.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking h2 v0.4.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tinystr v0.7.6
[INFO] [stderr]     Checking icu_collections v1.5.0
[INFO] [stderr]     Checking icu_locid v1.5.0
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_codegen v0.10.0
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking icu_provider v1.5.0
[INFO] [stderr]    Compiling selectors v0.25.0
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling string_cache_codegen v0.5.4
[INFO] [stderr]    Compiling phf_macros v0.11.3
[INFO] [stderr]     Checking icu_locid_transform v1.5.0
[INFO] [stderr]     Checking phf v0.11.3
[INFO] [stderr]    Compiling markup5ever v0.12.1
[INFO] [stderr]     Checking cssparser v0.31.2
[INFO] [stderr]     Checking hyper v1.6.0
[INFO] [stderr]     Checking http-body-util v0.1.2
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking tower v0.5.2
[INFO] [stderr]     Checking icu_properties v1.5.1
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking hyper-util v0.1.10
[INFO] [stderr]     Checking scraper v0.20.0
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking icu_normalizer v1.5.0
[INFO] [stderr]     Checking idna_adapter v1.2.0
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking reqwest v0.12.12
[INFO] [stderr]     Checking trpl v0.2.0
[INFO] [stderr]     Checking learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `returns_closure` is never used
[INFO] [stdout]   --> src/bin/corro.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn returns_closure() -> impl Fn(i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Screen` is never constructed
[INFO] [stdout]  --> src/bin/stream.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Screen {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_closure` is never used
[INFO] [stdout]   --> src/bin/corro.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn returns_closure() -> impl Fn(i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `timeout` is never used
[INFO] [stdout]   --> src/bin/async.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 | async fn timeout<F: Future>(future_to_try: F, max_time: Duration) -> Result<F::Output, Duration> {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Screen` is never constructed
[INFO] [stdout]  --> src/bin/stream.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Screen {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `median_anything` is never used
[INFO] [stdout]   --> src/bin/challenges/ch8.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn median_anything<'a, T>(list: &Vec<&'a T>) -> &'a T
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `timeout` is never used
[INFO] [stdout]   --> src/bin/async.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 | async fn timeout<F: Future>(future_to_try: F, max_time: Duration) -> Result<F::Output, Duration> {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.67s
[INFO] running `Command { std: "docker" "inspect" "87e33002849f0e94103b487bb93df0ebf9d824df84a134fbc95df17ca49df8b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87e33002849f0e94103b487bb93df0ebf9d824df84a134fbc95df17ca49df8b7", kill_on_drop: false }`
[INFO] [stdout] 87e33002849f0e94103b487bb93df0ebf9d824df84a134fbc95df17ca49df8b7
