[INFO] cloning repository https://github.com/ura3274/rust_exercices
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ura3274/rust_exercices" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fura3274%2Frust_exercices", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fura3274%2Frust_exercices'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c5c8bfe50bd5b00ee4524039040023fef5ac709
[INFO] building ura3274/rust_exercices against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fura3274%2Frust_exercices" "/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/ura3274/rust_exercices
[INFO] finished tweaking git repo https://github.com/ura3274/rust_exercices
[INFO] tweaked toml for git repo https://github.com/ura3274/rust_exercices written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ura3274/rust_exercices on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ura3274/rust_exercices 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scraper v0.20.0
[INFO] [stderr]   Downloaded html5ever v0.27.0
[INFO] [stderr]   Downloaded markup5ever v0.12.1
[INFO] [stderr]   Downloaded rodio v0.20.1
[INFO] [stderr]   Downloaded trpl v0.2.0
[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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ee24d6ec741ed6bfda71b098be49434f358a870394be36d607555d1e7936692
[INFO] running `Command { std: "docker" "start" "-a" "7ee24d6ec741ed6bfda71b098be49434f358a870394be36d607555d1e7936692", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ee24d6ec741ed6bfda71b098be49434f358a870394be36d607555d1e7936692", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ee24d6ec741ed6bfda71b098be49434f358a870394be36d607555d1e7936692", kill_on_drop: false }`
[INFO] [stdout] 7ee24d6ec741ed6bfda71b098be49434f358a870394be36d607555d1e7936692
[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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f0c524ece13c32876e84170860d649a2c7288ac2d3c7a9d3fef517f3ffde8bf
[INFO] running `Command { std: "docker" "start" "-a" "8f0c524ece13c32876e84170860d649a2c7288ac2d3c7a9d3fef517f3ffde8bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling cc v1.2.22
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling icu_properties_data v2.0.0
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling bytemuck v1.23.0
[INFO] [stderr]    Compiling dtoa v1.0.10
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling convert_case v0.7.1
[INFO] [stderr]    Compiling string_cache v0.8.9
[INFO] [stderr]    Compiling dtoa-short v0.3.5
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling symphonia-core v0.5.4
[INFO] [stderr]    Compiling phf v0.10.1
[INFO] [stderr]    Compiling servo_arc v0.3.0
[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling cpal v0.15.3
[INFO] [stderr]    Compiling tokio v1.45.0
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling alsa v0.9.1
[INFO] [stderr]    Compiling rustls-pemfile v2.2.0
[INFO] [stderr]    Compiling ogg v0.8.0
[INFO] [stderr]    Compiling ego-tree v0.6.3
[INFO] [stderr]    Compiling litrs v0.4.1
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling dasp_sample v0.11.0
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling signal-hook-mio v0.2.4
[INFO] [stderr]    Compiling hound v3.5.1
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling lewton v0.10.2
[INFO] [stderr]    Compiling rand v0.9.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling openssl-sys v0.9.108
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling symphonia-metadata v0.5.4
[INFO] [stderr]    Compiling openssl v0.10.72
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling symphonia-bundle-mp3 v0.5.4
[INFO] [stderr]    Compiling symphonia v0.5.4
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling rodio v0.20.1
[INFO] [stderr]    Compiling phf_codegen v0.10.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.4
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling selectors v0.25.0
[INFO] [stderr]    Compiling markup5ever v0.12.1
[INFO] [stderr]    Compiling tokio-util v0.7.15
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]    Compiling h2 v0.4.10
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling phf_macros v0.11.3
[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 v0.99.20
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling crossterm v0.29.0
[INFO] [stderr]    Compiling cssparser v0.31.2
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling zerofrom v0.1.6
[INFO] [stderr]    Compiling yoke v0.8.0
[INFO] [stderr]    Compiling zerovec v0.11.2
[INFO] [stderr]    Compiling zerotrie v0.2.2
[INFO] [stderr]    Compiling scraper v0.20.0
[INFO] [stderr]    Compiling tinystr v0.8.1
[INFO] [stderr]    Compiling potential_utf v0.1.2
[INFO] [stderr]    Compiling icu_collections v2.0.0
[INFO] [stderr]    Compiling icu_locale_core v2.0.0
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling icu_provider v2.0.0
[INFO] [stderr]    Compiling hyper v1.6.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling tower v0.5.2
[INFO] [stderr]    Compiling icu_normalizer v2.0.0
[INFO] [stderr]    Compiling icu_properties v2.0.0
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling hyper-util v0.1.11
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.0.3
[INFO] [stderr]    Compiling url v2.5.4
[INFO] [stderr]    Compiling hyper-tls v0.6.0
[INFO] [stderr]    Compiling reqwest v0.12.15
[INFO] [stderr]    Compiling trpl v0.2.0
[INFO] [stderr]    Compiling exer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/main.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | struct A<'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 `rt` is never used
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn rt()->impl B<i32, Output = String>{
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `B` is never used
[INFO] [stdout]   --> src/main.rs:69:7
[INFO] [stdout]    |
[INFO] [stdout] 69 | trait B<T>{
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.90s
[INFO] running `Command { std: "docker" "inspect" "8f0c524ece13c32876e84170860d649a2c7288ac2d3c7a9d3fef517f3ffde8bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f0c524ece13c32876e84170860d649a2c7288ac2d3c7a9d3fef517f3ffde8bf", kill_on_drop: false }`
[INFO] [stdout] 8f0c524ece13c32876e84170860d649a2c7288ac2d3c7a9d3fef517f3ffde8bf
[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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87b871fcd875d0eeff05941a9dd8b4766b55dca8d35b71605053b9efcc3d7494
[INFO] running `Command { std: "docker" "start" "-a" "87b871fcd875d0eeff05941a9dd8b4766b55dca8d35b71605053b9efcc3d7494", kill_on_drop: false }`
[INFO] [stderr]    Compiling exer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/main.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | struct A<'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 `rt` is never used
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn rt()->impl B<i32, Output = String>{
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `B` is never used
[INFO] [stdout]   --> src/main.rs:69:7
[INFO] [stdout]    |
[INFO] [stdout] 69 | trait B<T>{
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "87b871fcd875d0eeff05941a9dd8b4766b55dca8d35b71605053b9efcc3d7494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87b871fcd875d0eeff05941a9dd8b4766b55dca8d35b71605053b9efcc3d7494", kill_on_drop: false }`
[INFO] [stdout] 87b871fcd875d0eeff05941a9dd8b4766b55dca8d35b71605053b9efcc3d7494
