[INFO] cloning repository https://github.com/Handy-caT/rust-sandbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Handy-caT/rust-sandbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHandy-caT%2Frust-sandbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHandy-caT%2Frust-sandbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5227c276de64a54996885db9e53b7bd2400c6ec
[INFO] checking Handy-caT/rust-sandbox against master#5a45ab9738330fb317d49e3594c2db5248b1e971 for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHandy-caT%2Frust-sandbox" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Handy-caT/rust-sandbox on toolchain 5a45ab9738330fb317d49e3594c2db5248b1e971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Handy-caT/rust-sandbox
[INFO] finished tweaking git repo https://github.com/Handy-caT/rust-sandbox
[INFO] tweaked toml for git repo https://github.com/Handy-caT/rust-sandbox written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Handy-caT/rust-sandbox 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" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 181 packages to latest compatible versions
[INFO] [stderr]       Adding ahash v0.4.8
[INFO] [stderr]       Adding android-tzdata v0.1.1
[INFO] [stderr]       Adding android_system_properties v0.1.5
[INFO] [stderr]       Adding argon2 v0.5.3
[INFO] [stderr]       Adding arrayvec v0.7.6
[INFO] [stderr]       Adding async-trait v0.1.85
[INFO] [stderr]       Adding base64 v0.13.1
[INFO] [stderr]       Adding base64 v0.21.7
[INFO] [stderr]       Adding base64ct v1.6.0
[INFO] [stderr]       Adding bit-set v0.8.0
[INFO] [stderr]       Adding bit-vec v0.8.0
[INFO] [stderr]       Adding bitflags v2.8.0
[INFO] [stderr]       Adding bitmaps v2.1.0
[INFO] [stderr]       Adding blake2 v0.10.6
[INFO] [stderr]       Adding block-buffer v0.10.4
[INFO] [stderr]       Adding bumpalo v3.17.0
[INFO] [stderr]       Adding chrono v0.4.39
[INFO] [stderr]       Adding config v0.12.0 (available: v0.15.7)
[INFO] [stderr]       Adding core-foundation v0.9.4
[INFO] [stderr]       Adding core-foundation-sys v0.8.7
[INFO] [stderr]       Adding cpufeatures v0.2.17
[INFO] [stderr]       Adding crossbeam v0.8.4
[INFO] [stderr]       Adding crossbeam-channel v0.5.14
[INFO] [stderr]       Adding crossbeam-deque v0.8.6
[INFO] [stderr]       Adding crossbeam-epoch v0.9.18
[INFO] [stderr]       Adding crossbeam-queue v0.3.12
[INFO] [stderr]       Adding crossbeam-utils v0.8.21
[INFO] [stderr]       Adding crypto-common v0.1.6
[INFO] [stderr]       Adding difflib v0.4.0
[INFO] [stderr]       Adding digest v0.10.7
[INFO] [stderr]       Adding dlv-list v0.2.3
[INFO] [stderr]       Adding downcast v0.11.0
[INFO] [stderr]       Adding duration-str v0.5.1 (available: v0.12.0)
[INFO] [stderr]       Adding either v1.13.0
[INFO] [stderr]       Adding encoding_rs v0.8.35
[INFO] [stderr]       Adding equivalent v1.0.1
[INFO] [stderr]       Adding errno v0.3.10
[INFO] [stderr]       Adding fastrand v2.3.0
[INFO] [stderr]       Adding float-cmp v0.9.0
[INFO] [stderr]       Adding fnv v1.0.7
[INFO] [stderr]       Adding foreign-types v0.3.2
[INFO] [stderr]       Adding foreign-types-shared v0.1.1
[INFO] [stderr]       Adding form_urlencoded v1.2.1
[INFO] [stderr]       Adding fragile v2.0.0
[INFO] [stderr]       Adding generic-array v0.14.7
[INFO] [stderr]       Adding h2 v0.3.26
[INFO] [stderr]       Adding hashbrown v0.9.1
[INFO] [stderr]       Adding hashbrown v0.15.2
[INFO] [stderr]       Adding http v0.2.12
[INFO] [stderr]       Adding http-body v0.4.6
[INFO] [stderr]       Adding httparse v1.10.0
[INFO] [stderr]       Adding httpdate v1.0.3
[INFO] [stderr]       Adding humantime v2.1.0
[INFO] [stderr]       Adding humantime-serde v1.1.1
[INFO] [stderr]       Adding hyper v0.14.32
[INFO] [stderr]       Adding hyper-tls v0.5.0
[INFO] [stderr]       Adding iana-time-zone v0.1.61
[INFO] [stderr]       Adding iana-time-zone-haiku v0.1.2
[INFO] [stderr]       Adding idna v0.5.0
[INFO] [stderr]       Adding im v15.1.0
[INFO] [stderr]       Adding indexmap v2.7.1
[INFO] [stderr]       Adding ipnet v2.11.0
[INFO] [stderr]       Adding itertools v0.10.5
[INFO] [stderr]       Adding js-sys v0.3.77
[INFO] [stderr]       Adding json5 v0.4.1
[INFO] [stderr]       Adding keccak v0.1.5
[INFO] [stderr]     Updating libc v0.2.147 -> v0.2.169
[INFO] [stderr]       Adding linked-hash-map v0.5.6
[INFO] [stderr]       Adding linux-raw-sys v0.4.15
[INFO] [stderr]       Adding mime v0.3.17
[INFO] [stderr]       Adding minimal-lexical v0.2.1
[INFO] [stderr]       Adding mockall v0.11.4 (available: v0.13.1)
[INFO] [stderr]       Adding mockall_derive v0.11.4
[INFO] [stderr]       Adding native-tls v0.2.13
[INFO] [stderr]       Adding nom v7.1.3 (available: v8.0.0)
[INFO] [stderr]       Adding normalize-line-endings v0.3.0
[INFO] [stderr]       Adding num-traits v0.2.19
[INFO] [stderr]       Adding openssl v0.10.69
[INFO] [stderr]       Adding openssl-macros v0.1.1
[INFO] [stderr]       Adding openssl-probe v0.1.6
[INFO] [stderr]       Adding openssl-sys v0.9.104
[INFO] [stderr]       Adding ordered-multimap v0.3.1
[INFO] [stderr]       Adding password-hash v0.5.0
[INFO] [stderr]       Adding pathdiff v0.2.3
[INFO] [stderr]       Adding percent-encoding v2.3.1
[INFO] [stderr]       Adding pest v2.7.15
[INFO] [stderr]       Adding pest_derive v2.7.15
[INFO] [stderr]       Adding pest_generator v2.7.15
[INFO] [stderr]       Adding pest_meta v2.7.15
[INFO] [stderr]       Adding pkg-config v0.3.31
[INFO] [stderr]       Adding predicates v2.1.5
[INFO] [stderr]       Adding predicates-core v1.0.9
[INFO] [stderr]       Adding predicates-tree v1.0.12
[INFO] [stderr]     Updating proc-macro2 v1.0.66 -> v1.0.93
[INFO] [stderr]       Adding proptest v1.6.0
[INFO] [stderr]       Adding quick-error v1.2.3
[INFO] [stderr]     Updating quote v1.0.33 -> v1.0.38
[INFO] [stderr]       Adding rand_hc v0.3.2 (available: v0.4.0)
[INFO] [stderr]       Adding rand_xorshift v0.3.0
[INFO] [stderr]       Adding rand_xoshiro v0.6.0
[INFO] [stderr]       Adding rayon v1.10.0
[INFO] [stderr]       Adding rayon-core v1.12.1
[INFO] [stderr]       Adding regex-syntax v0.8.5
[INFO] [stderr]       Adding reqwest v0.11.27 (available: v0.12.12)
[INFO] [stderr]       Adding ron v0.7.1
[INFO] [stderr]       Adding rust-ini v0.17.0
[INFO] [stderr]       Adding rust_decimal v1.36.0
[INFO] [stderr]       Adding rustix v0.38.44
[INFO] [stderr]       Adding rustls-pemfile v1.0.4
[INFO] [stderr]       Adding rustversion v1.0.19
[INFO] [stderr]       Adding rusty-fork v0.3.0
[INFO] [stderr]       Adding schannel v0.1.27
[INFO] [stderr]       Adding secrecy v0.8.0 (available: v0.10.3)
[INFO] [stderr]       Adding security-framework v2.11.1
[INFO] [stderr]       Adding security-framework-sys v2.14.0
[INFO] [stderr]     Updating serde v1.0.188 -> v1.0.217
[INFO] [stderr]     Updating serde_derive v1.0.188 -> v1.0.217
[INFO] [stderr]       Adding serde_spanned v0.6.8
[INFO] [stderr]       Adding serde_urlencoded v0.7.1
[INFO] [stderr]       Adding serde_yaml v0.9.34+deprecated
[INFO] [stderr]       Adding sha2 v0.10.8
[INFO] [stderr]       Adding sha3 v0.10.8
[INFO] [stderr]       Adding sized-chunks v0.6.5
[INFO] [stderr]       Adding smart-default v0.7.1
[INFO] [stderr]       Adding subtle v2.6.1
[INFO] [stderr]       Adding syn v1.0.109
[INFO] [stderr]       Adding syn v2.0.96
[INFO] [stderr]       Adding sync_wrapper v0.1.2
[INFO] [stderr]       Adding system-configuration v0.5.1
[INFO] [stderr]       Adding system-configuration-sys v0.5.0
[INFO] [stderr]       Adding tempfile v3.10.1 (available: v3.16.0)
[INFO] [stderr]       Adding termtree v0.5.1
[INFO] [stderr]       Adding thiserror v1.0.69
[INFO] [stderr]       Adding thiserror v2.0.11
[INFO] [stderr]       Adding thiserror-impl v1.0.69
[INFO] [stderr]       Adding thiserror-impl v2.0.11
[INFO] [stderr]       Adding tinyvec v1.8.1
[INFO] [stderr]       Adding tinyvec_macros v0.1.1
[INFO] [stderr]       Adding tokio-native-tls v0.3.1
[INFO] [stderr]       Adding tokio-util v0.7.13
[INFO] [stderr]       Adding toml v0.5.11
[INFO] [stderr]       Adding toml v0.7.8 (available: v0.8.19)
[INFO] [stderr]       Adding toml_datetime v0.6.8
[INFO] [stderr]       Adding toml_edit v0.19.15
[INFO] [stderr]       Adding tower-service v0.3.3
[INFO] [stderr]       Adding try-lock v0.2.5
[INFO] [stderr]       Adding typenum v1.17.0
[INFO] [stderr]       Adding ucd-trie v0.1.7
[INFO] [stderr]       Adding unarray v0.1.4
[INFO] [stderr]       Adding unicode-bidi v0.3.18
[INFO] [stderr]       Adding unicode-normalization v0.1.24
[INFO] [stderr]       Adding unsafe-libyaml v0.2.11
[INFO] [stderr]       Adding url v2.5.2 (available: v2.5.4)
[INFO] [stderr]       Adding uuid v0.8.2 (available: v1.12.1)
[INFO] [stderr]       Adding vcpkg v0.2.15
[INFO] [stderr]       Adding version_check v0.9.5
[INFO] [stderr]       Adding wait-timeout v0.2.0
[INFO] [stderr]       Adding want v0.3.1
[INFO] [stderr]       Adding wasm-bindgen v0.2.100
[INFO] [stderr]       Adding wasm-bindgen-backend v0.2.100
[INFO] [stderr]       Adding wasm-bindgen-futures v0.4.50
[INFO] [stderr]       Adding wasm-bindgen-macro v0.2.100
[INFO] [stderr]       Adding wasm-bindgen-macro-support v0.2.100
[INFO] [stderr]       Adding wasm-bindgen-shared v0.2.100
[INFO] [stderr]       Adding web-sys v0.3.77
[INFO] [stderr]       Adding windows-core v0.52.0
[INFO] [stderr]       Adding windows-sys v0.52.0
[INFO] [stderr]       Adding windows-sys v0.59.0
[INFO] [stderr]       Adding windows-targets v0.52.6
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.52.6
[INFO] [stderr]       Adding windows_aarch64_msvc v0.52.6
[INFO] [stderr]       Adding windows_i686_gnu v0.52.6
[INFO] [stderr]       Adding windows_i686_gnullvm v0.52.6
[INFO] [stderr]       Adding windows_i686_msvc v0.52.6
[INFO] [stderr]       Adding windows_x86_64_gnu v0.52.6
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.52.6
[INFO] [stderr]       Adding windows_x86_64_msvc v0.52.6
[INFO] [stderr]       Adding winnow v0.5.40
[INFO] [stderr]       Adding winreg v0.50.0
[INFO] [stderr]       Adding yaml-rust v0.4.5
[INFO] [stderr]       Adding zeroize v1.8.1
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_derive v2.7.15
[INFO] [stderr]   Downloaded pest_meta v2.7.15
[INFO] [stderr]   Downloaded rand_hc v0.3.2
[INFO] [stderr]   Downloaded ordered-multimap v0.3.1
[INFO] [stderr]   Downloaded config v0.12.0
[INFO] [stderr]   Downloaded rust-ini v0.17.0
[INFO] [stderr]   Downloaded humantime-serde v1.1.1
[INFO] [stderr]   Downloaded pest_generator v2.7.15
[INFO] [stderr]   Downloaded pest v2.7.15
[INFO] [stderr]   Downloaded dlv-list v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 139283b52ea249f16050d04a0242da81b565665effdb8ebb819ce548362daa15
[INFO] running `Command { std: "docker" "start" "-a" "139283b52ea249f16050d04a0242da81b565665effdb8ebb819ce548362daa15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "139283b52ea249f16050d04a0242da81b565665effdb8ebb819ce548362daa15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139283b52ea249f16050d04a0242da81b565665effdb8ebb819ce548362daa15", kill_on_drop: false }`
[INFO] [stdout] 139283b52ea249f16050d04a0242da81b565665effdb8ebb819ce548362daa15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e0162f74d81b1601175fff5ae6b711118c50fcdbae7abbdef3d0a605fcdda6e
[INFO] running `Command { std: "docker" "start" "-a" "9e0162f74d81b1601175fff5ae6b711118c50fcdbae7abbdef3d0a605fcdda6e", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking bitflags v2.8.0
[INFO] [stderr]     Checking indexmap v2.7.1
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling time-macros v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]     Checking tinyvec v1.8.1
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking anstyle v1.0.2
[INFO] [stderr]     Checking anstyle-parse v0.2.1
[INFO] [stderr]     Checking unicode-bidi v0.3.18
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]    Compiling openssl v0.10.69
[INFO] [stderr]     Checking aho-corasick v1.0.5
[INFO] [stderr]     Checking anstream v0.5.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]    Compiling httparse v1.10.0
[INFO] [stderr]     Checking clap_builder v4.4.2
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling native-tls v0.2.13
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking openssl-probe v0.1.6
[INFO] [stderr]     Checking ahash v0.4.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking winnow v0.5.40
[INFO] [stderr]     Checking unicode-ident v1.0.11
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking proc-macro2 v1.0.93
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking predicates-core v1.0.9
[INFO] [stderr]     Checking fastrand v2.3.0
[INFO] [stderr]    Compiling rust_decimal v1.36.0
[INFO] [stderr]     Checking httpdate v1.0.3
[INFO] [stderr]     Checking quote v1.0.38
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking termtree v0.5.1
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking parking_lot_core v0.9.8
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking password-hash v0.5.0
[INFO] [stderr]     Checking rustls-pemfile v1.0.4
[INFO] [stderr]     Checking chrono v0.4.39
[INFO] [stderr]     Checking predicates-tree v1.0.12
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking crossbeam-channel v0.5.14
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]     Checking zeroize v1.8.1
[INFO] [stderr]     Checking dlv-list v0.2.3
[INFO] [stderr]     Checking fragile v2.0.0
[INFO] [stderr]     Checking pathdiff v0.2.3
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking cpufeatures v0.2.17
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking downcast v0.11.0
[INFO] [stderr]     Checking ordered-multimap v0.3.1
[INFO] [stderr]     Checking ipnet v2.11.0
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking argon2 v0.5.3
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking rust-ini v0.17.0
[INFO] [stderr]     Checking rand_hc v0.3.2
[INFO] [stderr]     Checking step_1_6 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_6_dispatch)
[INFO] [stderr]     Checking step_1_9 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_9_phantom)
[INFO] [stdout] warning: unused import: `crate::user::User`
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking step_3_7 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_7_rand_crypto)
[INFO] [stdout] warning: struct `DynamicUserRepository` is never constructed
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/dynamic.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct DynamicUserRepository {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/dynamic.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl DynamicUserRepository {
[INFO] [stdout]   | -------------------------- associated function in this implementation
[INFO] [stdout] 9 |     fn new(storage: Box<dyn Storage<u64, User>>) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking step_1_3 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_3_rc_cell)
[INFO] [stderr]     Checking step_1_7 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_7_sized)
[INFO] [stdout] warning: unused imports: `Error` and `PasswordHash`
[INFO] [stdout]  --> 3_ecosystem/3_7_rand_crypto/src/main.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use argon2::{Argon2, Error, PasswordHash, PasswordHasher};
[INFO] [stdout]   |                      ^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error` and `PasswordHash`
[INFO] [stdout]  --> 3_ecosystem/3_7_rand_crypto/src/main.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use argon2::{Argon2, Error, PasswordHash, PasswordHasher};
[INFO] [stdout]   |                      ^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking step_2_4 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_4_generic_in_type_out)
[INFO] [stderr]     Checking step_1_1 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_1_default_clone_copy)
[INFO] [stderr]     Checking step_4_1 v0.1.0 (/opt/rustwide/workdir/4_backend/4_1_db)
[INFO] [stdout] warning: method `handle_command` is never used
[INFO] [stdout]  --> 1_concepts/1_7_sized/src/command_handler.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait CommandHandler<C: Command> {
[INFO] [stdout]   |           -------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 7 |     fn handle_command(&self, cmd: &C, ctx: &mut Self::Context) -> Self::Result;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_7_sized/src/create_user.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl CreateUser {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking step_1 v0.1.0 (/opt/rustwide/workdir/1_concepts)
[INFO] [stderr]     Checking step_2_2 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_2_mem_replace)
[INFO] [stderr]     Checking step_2_6 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_6_sealing)
[INFO] [stdout] warning: unused import: `crate::doubly_linked_list::DoublyLinkedList`
[INFO] [stdout]  --> 1_concepts/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::doubly_linked_list::DoublyLinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::TypeId`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::TypeId;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`, and `Formatter`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking step_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem)
[INFO] [stderr]     Checking step_4 v0.1.0 (/opt/rustwide/workdir/4_backend)
[INFO] [stderr]     Checking step_1_8 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_8_thread_safety)
[INFO] [stderr]     Checking step_2_1 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_1_type_safety)
[INFO] [stderr]     Checking step_2_3 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_3_bound_impl)
[INFO] [stdout] warning: unused variable: `tail`
[INFO] [stdout]   --> 1_concepts/src/real_parallel_list.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let tail = self.tail.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `pop_node_left`, and `length` are never used
[INFO] [stdout]    --> 1_concepts/src/doubly_linked_list.rs:19:12
[INFO] [stdout]     |
[INFO] [stdout] 18  | impl<T> DoublyLinkedList<T> {
[INFO] [stdout]     | --------------------------- associated items in this implementation
[INFO] [stdout] 19  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 75  |     fn pop_node_left(node_right: Node<T>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn length(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AdvancedList` is never used
[INFO] [stdout]   --> 1_concepts/src/list.rs:43:11
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub trait AdvancedList<T> {
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 1_concepts/src/parallel_list.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> ParallelDoublyLinkedList<T> {
[INFO] [stdout]    | ----------------------------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking step_4_3 v0.1.0 (/opt/rustwide/workdir/4_backend/4_3_api)
[INFO] [stdout] warning: unused import: `SyncAndNotSend`
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:42:34
[INFO] [stdout]    |
[INFO] [stdout] 42 |     use crate::types::{OnlySend, SyncAndNotSend, SyncAndSend};
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GlobalStack` is never constructed
[INFO] [stdout]  --> 1_concepts/1_3_rc_cell/src/stack.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct GlobalStack<T> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> 1_concepts/1_3_rc_cell/src/stack.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl<T> GlobalStack<T> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 9  |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn push(&self, t: T) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn pop(&self) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotSyncNotSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct NotSyncNotSend<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get` are never used
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl <T> NotSyncNotSend<T> {
[INFO] [stdout]    | -------------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn get(&self) -> &T {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SyncAndNotSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct SyncAndNotSend {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `status` is never read
[INFO] [stdout]   --> 2_idioms/2_1_type_safety/src/post.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Post<Status> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     status: Status
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Post` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `delete` is never used
[INFO] [stdout]   --> 2_idioms/2_1_type_safety/src/post.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl Post<Published> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 61 |     fn delete(self) -> Post<Deleted> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking step_4_2 v0.1.0 (/opt/rustwide/workdir/4_backend/4_2_http)
[INFO] [stderr]     Checking step_2_5 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_5_exhaustivity)
[INFO] [stdout] warning: unused import: `crate::user::User`
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 name,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OnlySend` is never constructed
[INFO] [stdout]  --> 1_concepts/1_8_thread_safety/src/types.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct OnlySend<T>
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotSyncNotSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct NotSyncNotSend<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get` are never used
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl <T> NotSyncNotSend<T> {
[INFO] [stdout]    | -------------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn get(&self) -> &T {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SyncAndSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct SyncAndSend {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SyncAndNotSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct SyncAndNotSend {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 name,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::TypeId`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::TypeId;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`, and `Formatter`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking step_2 v0.1.0 (/opt/rustwide/workdir/2_idioms)
[INFO] [stdout] warning: unused import: `crate::doubly_linked_list::DoublyLinkedList`
[INFO] [stdout]  --> 1_concepts/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::doubly_linked_list::DoublyLinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]    --> 1_concepts/src/real_parallel_list.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     use std::thread::sleep;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stdout] warning: unused variable: `tail`
[INFO] [stdout]   --> 1_concepts/src/real_parallel_list.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let tail = self.tail.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `pop_node_left` is never used
[INFO] [stdout]   --> 1_concepts/src/doubly_linked_list.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T> DoublyLinkedList<T> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn pop_node_left(node_right: Node<T>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AdvancedList` is never used
[INFO] [stdout]   --> 1_concepts/src/list.rs:43:11
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub trait AdvancedList<T> {
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `One`, `Two`, `Five`, `Ten`, `Twenty`, and `Fifty` are never constructed
[INFO] [stdout]  --> 2_idioms/src/coin/coin.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Coin {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 3 |     One(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     Two(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 5 |     Five(),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     Ten(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     Twenty(),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Fifty(),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Coin` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/coin/coin.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Coin {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(value: u16) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]  --> 2_idioms/src/machine/request/product_request.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ProductRequest<'a, State> {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     state: State,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `product` and `coins` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a, State> ProductRequest<'a, State> {
[INFO] [stdout]    | ----------------------------------------- methods in this implementation
[INFO] [stdout] 12 |     pub fn product(&self) -> &Product<'a> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn coins(&self) -> &[Coin] {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `check_availability` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<'a> ProductRequest<'a, Created> {
[INFO] [stdout]    | ------------------------------------ associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(product: Product<'a>, coins: Vec<Coin>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn check_availability(self) -> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `deny` and `check_payment` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<'a> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    | ------------------------------------------------ methods in this implementation
[INFO] [stdout] 36 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn check_payment(self) -> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `deny` and `accept` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<'a> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    | ------------------------------------------- methods in this implementation
[INFO] [stdout] 46 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn accept(self) -> ProductRequest<'a, Accepted> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/product.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl<'a> Product<'a> {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 24 |     pub fn new<S: Into<Cow<'a, str>>>(name: S, price: Price) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VendingMachine` is never constructed
[INFO] [stdout]   --> 2_idioms/src/machine/vending_machine.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct VendingMachine<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:24:12
[INFO] [stdout]     |
[INFO] [stdout] 23  | impl<'a> VendingMachine<'a> {
[INFO] [stdout]     | --------------------------- associated items in this implementation
[INFO] [stdout] 24  |     pub fn new(max_capacity: u8) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41  |     pub fn add_product(&mut self, product: Product<'a>, quantity: Quantity) -> Result<(), VendingError> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61  |     pub fn max_capacity(&self) -> u8 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65  |     fn add_coins(&mut self, coins: &[Coin]) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     fn delete_coins(&mut self, coins: &[Coin]) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 79  |     fn add_coin_count(&mut self, coin: Coin, count: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |     fn check_availability(&self, product: &Product) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88  |     fn get_price_products(products: &HashMap<Product, (Price, Quantity)>, product: &Product<'a>) -> Result<Price, VendingError<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 92  |     pub fn get_price(&self, product: &Product<'a>) -> Result<Price, VendingError> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96  |     pub fn get_products(&self) -> Vec<Product> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn give_product(&mut self, product: &Product<'a>) -> Result<(), VendingError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn buy_product(&mut self, product: &Product<'a>, coins: Vec<Coin>) -> Result<(Product<'a>, Vec<Coin>), (VendingError, Vec<Coin>)> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_sum` is never used
[INFO] [stdout]  --> 2_idioms/src/machine/change_counter.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn count_sum(coins: &[Coin]) -> u16 {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_nearest` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/change_counter.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn find_nearest(purse: &HashMap<Coin, u8>, amount: u16) -> Option<Coin> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_counter` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/change_counter.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn change_counter(purse: &HashMap<Coin, u8>, change_amount: u16) -> Option<Vec<Coin>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ProductNotFound`, `NotEnoughMoney`, `BadPrice`, `NotEnoughChange`, and `NotEnoughCapacity` are never constructed
[INFO] [stdout]   --> 2_idioms/src/machine/error/vending_error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub enum VendingError<'a> {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 10 |     ProductNotFound(ProductNotFound<'a>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 11 |     NotEnoughMoney(NotEnoughMoney<'a>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     BadPrice(BadPrice<'a>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     NotEnoughChange(NotEnoughChange),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     NotEnoughCapacity(NotEnoughCapacity),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_money.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<'a> NotEnoughMoney<'a> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new(price: u16, product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/bad_price.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<'a> BadPrice<'a> {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new(price: u16, product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_capacity.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl NotEnoughCapacity {
[INFO] [stdout]    | ---------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(capacity: u16, needed: u16) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/product_not_found.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<'a> ProductNotFound<'a> {
[INFO] [stdout]    | ---------------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_change.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl NotEnoughChange {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 20 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/coin/coin.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Coin {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(value: u16) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]  --> 2_idioms/src/machine/request/product_request.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ProductRequest<'a, State> {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     state: State,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deny` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<'a> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    | ------------------------------------------------ method in this implementation
[INFO] [stdout] 36 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deny` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<'a> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] 46 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 188 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |         vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 235 |         vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:248:9
[INFO] [stdout]     |
[INFO] [stdout] 248 |         vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:259:9
[INFO] [stdout]     |
[INFO] [stdout] 259 |         vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 259 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 284 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 305 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 327 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]     Checking step_1_5 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_5_convert_cast_deref)
[INFO] [stderr]     Checking step_3_4 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_4_regex_parsing)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_that_use_str` is never used
[INFO] [stdout]   --> 1_concepts/1_5_convert_cast_deref/src/email_string.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn fn_that_use_str(s: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Random` is never constructed
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Random<T>(T, T, T);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get_random` are never used
[INFO] [stdout]   --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl<T> Random<T> {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 9  |     pub fn new(a: T, b: T, c: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn get_random(&self) -> &T {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Random` is never constructed
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Random<T>(T, T, T);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get_random` are never used
[INFO] [stdout]   --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl<T> Random<T> {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 9  |     pub fn new(a: T, b: T, c: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn get_random(&self) -> &T {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `captures`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:111:26
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     Some(captures) => {
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:262:25
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     Err(err) => {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:294:17
[INFO] [stdout]     |
[INFO] [stdout] 294 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |             input = input_next;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stdout] warning: unused variable: `captures`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:111:26
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     Some(captures) => {
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:619:14
[INFO] [stdout]     |
[INFO] [stdout] 619 |         let (input, precision) = result.unwrap();
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:262:25
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     Err(err) => {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:294:17
[INFO] [stdout]     |
[INFO] [stdout] 294 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |             input = input_next;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser` is never used
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | trait Parser {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Width` is never constructed
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Width(pub Count);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Sign` is never used
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Sign {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Precision` is never used
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | enum Precision {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Count` is never used
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum Count {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Argument` is never used
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:41:6
[INFO] [stdout]    |
[INFO] [stdout] 41 | enum Argument {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Integer` is never constructed
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Integer(pub usize);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Identifier` is never constructed
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Identifier(pub String);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RegexParser` is never constructed
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct RegexParser {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:61:8
[INFO] [stdout]     |
[INFO] [stdout] 60  | impl RegexParser {
[INFO] [stdout]     | ---------------- associated items in this implementation
[INFO] [stdout] 61  |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 75  |     fn parse_integer(&self, input: Option<String>) -> Option<Integer> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90  |     fn parse_identifier(&self, input: Option<String>) -> Option<Identifier> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     fn parse_argument(&self, input: Option<String>) -> Option<Argument> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn parse_count(&self, input: Option<String>) -> Option<Count> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 146 |     fn parse_sign(&self, input: Option<String>) -> Option<Sign> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 |     fn parse_width(&self, input: Option<String>) -> Option<Width> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 169 |     fn parse_precision(&self, input: Option<String>) -> Option<Precision> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NomParser` is never constructed
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:197:8
[INFO] [stdout]     |
[INFO] [stdout] 197 | struct NomParser;
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:200:8
[INFO] [stdout]     |
[INFO] [stdout] 199 | impl NomParser {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 200 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 204 |     fn parse_sign<'a>(&self, input: &'a str) -> IResult<&'a str, Sign> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 213 |     fn parse_align<'a>(&self, input: &'a str) -> IResult<&'a str, (&'a str, &'a str)> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 233 |     fn parse_grid<'a>(&self, input: &'a str) -> IResult<&'a str, &'a str> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn parse_zero<'a>(&self, input: &'a str) -> IResult<&'a str, &'a str> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 241 |     fn parse_width<'a>(&self, input: &'a str) -> IResult<&'a str, Width> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 253 |     fn parse_precision<'a>(&self, input: &'a str) -> IResult<&'a str, Precision> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 281 |     fn parse_count<'a>(&self, input: &'a str) -> IResult<&'a str, Count> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 302 |     fn parse_parameter<'a>(&self, input: &'a str) -> IResult<&'a str, Argument> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 318 |     fn parse_argument<'a>(&self, input: &'a str) -> IResult<&'a str, Argument> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling async-trait v0.1.85
[INFO] [stderr]     Checking proptest v1.6.0
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]    Compiling smart-default v0.7.1
[INFO] [stderr]     Checking step_3_5 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_5_collections)
[INFO] [stdout] warning: unused imports: `OrdMap` and `Vector`
[INFO] [stdout]  --> 3_ecosystem/3_5_collections/src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use im::{HashMap, OrdMap, Vector};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Id` is never constructed
[INFO] [stdout]  --> 3_ecosystem/3_5_collections/src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Id(pub u32);
[INFO] [stdout]   |        ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> 3_ecosystem/3_5_collections/src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `UserRepository` is never used
[INFO] [stdout]   --> 3_ecosystem/3_5_collections/src/main.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | trait UserRepository {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VecUserRepository` is never constructed
[INFO] [stdout]   --> 3_ecosystem/3_5_collections/src/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct VecUserRepository {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_user` are never used
[INFO] [stdout]   --> 3_ecosystem/3_5_collections/src/main.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl VecUserRepository {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn add_user(&mut self, user: User) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OrdMap` and `Vector`
[INFO] [stdout]  --> 3_ecosystem/3_5_collections/src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use im::{HashMap, OrdMap, Vector};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]    --> 3_ecosystem/3_5_collections/src/main.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let user2 = User {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking step_3_10 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_10_threads)
[INFO] [stderr]     Checking pest v2.7.15
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stdout] warning: unused variable: `handles`
[INFO] [stdout]   --> 3_ecosystem/3_10_threads/src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let handles = (0..2).map(|i| {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handles`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handles`
[INFO] [stdout]   --> 3_ecosystem/3_10_threads/src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let handles = (0..2).map(|i| {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handles`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking my_proc_macros_lib v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro/my_proc_macros_lib)
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]     Checking step_3_2 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_2_macro/src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut map = btreemap! (
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_2_macro/src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut map = btreemap! (
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking clap v4.4.2
[INFO] [stderr]     Checking step_1_4 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_4_cow)
[INFO] [stderr]    Compiling pest_meta v2.7.15
[INFO] [stderr]    Compiling pest_generator v2.7.15
[INFO] [stderr]    Compiling pest_derive v2.7.15
[INFO] [stderr]     Checking mockall v0.11.4
[INFO] [stderr]     Checking step_3_1 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_1_testing)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_1_testing/src/main.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut guess = getter.get_guess_number();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_1_testing/src/main.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut guess = getter.get_guess_number();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking tokio-util v0.7.13
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking step_1_2 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_2_box_pin)
[INFO] [stdout] warning: unused import: `MutMeSomehow`
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:25:36
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use crate::pins::base_traits::{MutMeSomehow, SayHi};
[INFO] [stdout]    |                                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `SayHi` is never used
[INFO] [stdout]  --> 1_concepts/1_2_box_pin/src/pins/base_traits.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait SayHi: Debug {
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mut_me_somehow` is never used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/base_traits.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait MutMeSomehow {
[INFO] [stdout]    |           ------------ method in this trait
[INFO] [stdout] 11 |     fn mut_me_somehow(self: Pin<&mut Self>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]  --> 1_concepts/1_2_box_pin/src/pins/base_struct.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Point {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 6 |     pub x: i32,
[INFO] [stdout]   |         ^
[INFO] [stdout] 7 |     pub y: i32,
[INFO] [stdout]   |         ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Point` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/base_struct.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new(x: i32, y: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Poll` that must be used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         self.poll(&mut cx);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Poll` may be a `Pending` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let _ = self.poll(&mut cx);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/future.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut fut = MeasurableFuture {
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mut_me_somehow` is never used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/base_traits.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait MutMeSomehow {
[INFO] [stdout]    |           ------------ method in this trait
[INFO] [stdout] 11 |     fn mut_me_somehow(self: Pin<&mut Self>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]  --> 1_concepts/1_2_box_pin/src/pins/base_struct.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Point {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 6 |     pub x: i32,
[INFO] [stdout]   |         ^
[INFO] [stdout] 7 |     pub y: i32,
[INFO] [stdout]   |         ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Point` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Poll` that must be used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         self.poll(&mut cx);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Poll` may be a `Pending` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let _ = self.poll(&mut cx);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking deranged v0.3.8
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking serde_spanned v0.6.8
[INFO] [stderr]     Checking json5 v0.4.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking ron v0.7.1
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking humantime-serde v1.1.1
[INFO] [stderr]     Checking secrecy v0.8.0
[INFO] [stderr]     Checking toml_edit v0.19.15
[INFO] [stderr]     Checking time v0.3.28
[INFO] [stderr]     Checking config v0.12.0
[INFO] [stderr]     Checking toml v0.7.8
[INFO] [stdout] error[E0282]: type annotations needed for `Box<_>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/time-0.3.28/src/format_description/parse/mod.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let items = format_items
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     Ok(items.into())
[INFO] [stdout]    |              ---- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is an inference error on crate `time` caused by an API change in Rust 1.80.0; update `time` to version `>=0.3.35` by calling `cargo update`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `time` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9e0162f74d81b1601175fff5ae6b711118c50fcdbae7abbdef3d0a605fcdda6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e0162f74d81b1601175fff5ae6b711118c50fcdbae7abbdef3d0a605fcdda6e", kill_on_drop: false }`
[INFO] [stdout] 9e0162f74d81b1601175fff5ae6b711118c50fcdbae7abbdef3d0a605fcdda6e
