[INFO] cloning repository https://github.com/clvx/ultimate-rust-foundations [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/clvx/ultimate-rust-foundations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclvx%2Fultimate-rust-foundations", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclvx%2Fultimate-rust-foundations'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f5bad8e96126feab0785b7d4bc7f8926be91c823 [INFO] checking clvx/ultimate-rust-foundations against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclvx%2Fultimate-rust-foundations" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/clvx/ultimate-rust-foundations [INFO] finished tweaking git repo https://github.com/clvx/ultimate-rust-foundations [INFO] tweaked toml for git repo https://github.com/clvx/ultimate-rust-foundations written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/clvx/ultimate-rust-foundations on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/clvx/ultimate-rust-foundations 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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a79b4a33320afbef865ab2ecb1f43385ace9f8cfc74be8498ac1a1106bd245c3 [INFO] running `Command { std: "docker" "start" "-a" "a79b4a33320afbef865ab2ecb1f43385ace9f8cfc74be8498ac1a1106bd245c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a79b4a33320afbef865ab2ecb1f43385ace9f8cfc74be8498ac1a1106bd245c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a79b4a33320afbef865ab2ecb1f43385ace9f8cfc74be8498ac1a1106bd245c3", kill_on_drop: false }` [INFO] [stdout] a79b4a33320afbef865ab2ecb1f43385ace9f8cfc74be8498ac1a1106bd245c3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6ef35aca7d7a6158f325f323ea1420ae34b992657ad357105f162538acf26e3e [INFO] running `Command { std: "docker" "start" "-a" "6ef35aca7d7a6158f325f323ea1420ae34b992657ad357105f162538acf26e3e", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.93 [INFO] [stderr] Compiling libc v0.2.169 [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Checking log v0.4.25 [INFO] [stderr] Compiling serde_json v1.0.140 [INFO] [stderr] Compiling thiserror v2.0.11 [INFO] [stderr] Compiling openssl v0.10.68 [INFO] [stderr] Checking foldhash v0.1.4 [INFO] [stderr] Compiling stable_deref_trait v1.2.0 [INFO] [stderr] Compiling rustversion v1.0.19 [INFO] [stderr] Checking bitflags v2.8.0 [INFO] [stderr] Checking tower-layer v0.3.3 [INFO] [stderr] Checking crypto-common v0.1.6 [INFO] [stderr] Compiling writeable v0.5.5 [INFO] [stderr] Compiling litemap v0.7.4 [INFO] [stderr] Compiling smallvec v1.13.2 [INFO] [stderr] Checking cpufeatures v0.2.16 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Compiling icu_locid_transform_data v1.5.0 [INFO] [stderr] Checking hashbrown v0.15.2 [INFO] [stderr] Compiling futures-core v0.3.31 [INFO] [stderr] Compiling pin-project-lite v0.2.16 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling icu_properties_data v1.5.0 [INFO] [stderr] Compiling anyhow v1.0.95 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling lock_api v0.4.12 [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Compiling utf8_iter v1.0.4 [INFO] [stderr] Checking sha2 v0.10.8 [INFO] [stderr] Compiling write16 v1.0.0 [INFO] [stderr] Compiling utf16_iter v1.0.5 [INFO] [stderr] Compiling icu_normalizer_data v1.5.0 [INFO] [stderr] Compiling futures-sink v0.3.31 [INFO] [stderr] Compiling getrandom v0.3.2 [INFO] [stderr] Compiling foreign-types-shared v0.1.1 [INFO] [stderr] Compiling memchr v2.7.4 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling foreign-types v0.3.2 [INFO] [stderr] Compiling bytes v1.9.0 [INFO] [stderr] Compiling futures-io v0.3.31 [INFO] [stderr] Compiling itoa v1.0.14 [INFO] [stderr] Compiling futures-task v0.3.31 [INFO] [stderr] Compiling block-buffer v0.10.4 [INFO] [stderr] Checking indexmap v2.7.1 [INFO] [stderr] Compiling tracing-core v0.1.33 [INFO] [stderr] Compiling openssl-probe v0.1.5 [INFO] [stderr] Compiling parking v2.2.1 [INFO] [stderr] Compiling rustix v0.38.44 [INFO] [stderr] Compiling zerocopy v0.8.24 [INFO] [stderr] Compiling quote v1.0.38 [INFO] [stderr] Compiling spin v0.9.8 [INFO] [stderr] Compiling futures-util v0.3.31 [INFO] [stderr] Compiling syn v2.0.96 [INFO] [stderr] Checking parking_lot_core v0.9.10 [INFO] [stderr] Checking mio v1.0.3 [INFO] [stderr] Checking signal-hook-registry v1.4.2 [INFO] [stderr] Checking socket2 v0.5.8 [INFO] [stderr] Compiling jobserver v0.1.32 [INFO] [stderr] Compiling concurrent-queue v2.5.0 [INFO] [stderr] Compiling hashlink v0.10.0 [INFO] [stderr] Compiling parking_lot v0.12.3 [INFO] [stderr] Compiling cc v1.2.10 [INFO] [stderr] Checking rand_core v0.9.3 [INFO] [stderr] Compiling crossbeam-queue v0.3.12 [INFO] [stderr] Compiling event-listener v5.4.0 [INFO] [stderr] Compiling futures-intrusive v0.5.0 [INFO] [stderr] Compiling linux-raw-sys v0.4.15 [INFO] [stderr] Compiling flume v0.11.1 [INFO] [stderr] Compiling tokio v1.44.1 [INFO] [stderr] Compiling getrandom v0.2.15 [INFO] [stderr] Compiling futures-channel v0.3.31 [INFO] [stderr] Compiling fastrand v2.3.0 [INFO] [stderr] Compiling atoi v2.0.0 [INFO] [stderr] Compiling zstd-safe v7.2.4 [INFO] [stderr] Checking http v0.2.12 [INFO] [stderr] Compiling unicase v2.8.1 [INFO] [stderr] Checking miniz_oxide v0.8.3 [INFO] [stderr] Checking brotli-decompressor v4.0.2 [INFO] [stderr] Compiling axum-core v0.3.4 [INFO] [stderr] Compiling mime_guess v2.0.5 [INFO] [stderr] Checking ipnet v2.11.0 [INFO] [stderr] Checking deranged v0.4.0 [INFO] [stderr] Compiling axum v0.6.20 [INFO] [stderr] Checking tracing-log v0.2.0 [INFO] [stderr] Checking time-core v0.1.4 [INFO] [stderr] Checking dotenv v0.15.0 [INFO] [stderr] Checking clap_builder v4.5.27 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking crossbeam-channel v0.5.15 [INFO] [stderr] Checking flate2 v1.0.35 [INFO] [stderr] Checking matchit v0.8.4 [INFO] [stderr] Checking http-body v0.4.6 [INFO] [stderr] Checking hashbrown v0.14.5 [INFO] [stderr] Checking http-range-header v0.4.2 [INFO] [stderr] Checking core_affinity v0.8.1 [INFO] [stderr] Checking thread-priority v1.2.0 [INFO] [stderr] Checking affinity v0.1.0 (/opt/rustwide/workdir/foundations/session2/affinity) [INFO] [stderr] Compiling openssl-sys v0.9.104 [INFO] [stderr] Compiling libsqlite3-sys v0.30.1 [INFO] [stderr] Compiling zstd-sys v2.0.15+zstd.1.5.7 [INFO] [stderr] Checking brotli v7.0.0 [INFO] [stderr] Checking threadpool v0.1.0 (/opt/rustwide/workdir/foundations/session2/threadpool) [INFO] [stderr] Checking rwlocks v0.1.0 (/opt/rustwide/workdir/foundations/session2/rwlocks) [INFO] [stderr] Checking hello v0.1.0 (/opt/rustwide/workdir/foundations/session2/hello) [INFO] [stderr] Checking time v0.3.41 [INFO] [stderr] Checking tprio v0.1.0 (/opt/rustwide/workdir/foundations/session2/tprio) [INFO] [stderr] Checking footgun v0.1.0 (/opt/rustwide/workdir/foundations/session2/footgun) [INFO] [stderr] Checking refcount v0.1.0 (/opt/rustwide/workdir/foundations/session4/refcount) [INFO] [stderr] Checking traits v0.1.0 (/opt/rustwide/workdir/foundations/session4/traits) [INFO] [stdout] warning: static `HIGH_COUNT` is never used [INFO] [stdout] --> foundations/session2/tprio/src/main.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | static HIGH_COUNT: AtomicI32 = AtomicI32::new(0); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `HIGH_COUNT` is never used [INFO] [stdout] --> foundations/session2/tprio/src/main.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | static HIGH_COUNT: AtomicI32 = AtomicI32::new(0); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking parking v0.1.0 (/opt/rustwide/workdir/foundations/session2/parking) [INFO] [stderr] Checking divide_work v0.1.0 (/opt/rustwide/workdir/foundations/session2/divide_work) [INFO] [stderr] Checking workers v0.1.0 (/opt/rustwide/workdir/foundations/session2/workers) [INFO] [stdout] warning: unused import: `rc::Rc` [INFO] [stdout] --> foundations/session4/traits/src/main.rs:1:23 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{fmt::Debug, rc::Rc}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking deadlocks v0.1.0 (/opt/rustwide/workdir/foundations/session2/deadlocks) [INFO] [stderr] Checking refcell v0.1.0 (/opt/rustwide/workdir/foundations/session4/refcell) [INFO] [stdout] warning: unused variable: `animal` [INFO] [stdout] --> foundations/session4/traits/src/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let animal = get_animal(); // impl Animal for Cat [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_animal` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `DebuggableClonableAnimal` is never used [INFO] [stdout] --> foundations/session4/traits/src/main.rs:31:7 [INFO] [stdout] | [INFO] [stdout] 31 | trait DebuggableClonableAnimal: Animal+Debug+Clone {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking scoped_threads v0.1.0 (/opt/rustwide/workdir/foundations/session2/scoped_threads) [INFO] [stderr] Checking external_arc_mutex v0.1.0 (/opt/rustwide/workdir/foundations/session4/external_arc_mutex) [INFO] [stderr] Checking channels v0.1.0 (/opt/rustwide/workdir/foundations/session2/channels) [INFO] [stderr] Checking dropping v0.1.0 (/opt/rustwide/workdir/foundations/session4/dropping) [INFO] [stderr] Checking smart_pointer v0.1.0 (/opt/rustwide/workdir/foundations/session4/smart_pointer) [INFO] [stderr] Compiling native-tls v0.2.12 [INFO] [stderr] Checking generics v0.1.0 (/opt/rustwide/workdir/foundations/session4/generics_and_iterators) [INFO] [stderr] Checking internal_arc_mutex v0.1.0 (/opt/rustwide/workdir/foundations/session4/internal_arc_mutex) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> foundations/session4/generics_and_iterators/src/main.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 32 | fn iter(&self) -> HashMapBucketIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 32 | fn iter(&self) -> HashMapBucketIter<'_, K, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking thread_builder v0.1.0 (/opt/rustwide/workdir/foundations/session2/thread_builder) [INFO] [stderr] Checking mutexes v0.1.0 (/opt/rustwide/workdir/foundations/session2/mutexes) [INFO] [stderr] Checking operator_overloading v0.1.0 (/opt/rustwide/workdir/foundations/session4/operator_overloading) [INFO] [stderr] Checking dashmap v6.1.0 [INFO] [stderr] Checking atomicrefcount v0.1.0 (/opt/rustwide/workdir/foundations/session4/atomicrefcount) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> foundations/session2/mutexes/src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | for i in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> foundations/session2/mutexes/src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | for i in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking save_dynamic_bytes v0.1.0 (/opt/rustwide/workdir/foundations/session4/save_dynamic_bytes) [INFO] [stdout] warning: unused import: `rc::Rc` [INFO] [stdout] --> foundations/session4/traits/src/main.rs:1:23 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{fmt::Debug, rc::Rc}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `animal` [INFO] [stdout] --> foundations/session4/traits/src/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let animal = get_animal(); // impl Animal for Cat [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_animal` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `DebuggableClonableAnimal` is never used [INFO] [stdout] --> foundations/session4/traits/src/main.rs:31:7 [INFO] [stdout] | [INFO] [stdout] 31 | trait DebuggableClonableAnimal: Animal+Debug+Clone {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling futures-executor v0.3.31 [INFO] [stderr] Checking lifetimes v0.1.0 (/opt/rustwide/workdir/foundations/session4/lifetimes) [INFO] [stderr] Checking dashing v0.1.0 (/opt/rustwide/workdir/foundations/session2/dashing) [INFO] [stderr] Checking hello_world v0.1.0 (/opt/rustwide/workdir/foundations/session1/hello_world) [INFO] [stderr] Checking linked_list v0.1.0 (/opt/rustwide/workdir/foundations/session4/linked_list) [INFO] [stderr] Checking variables v0.1.0 (/opt/rustwide/workdir/foundations/session1/variables) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> foundations/session4/linked_list/src/main.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | Strong(Rc), // Strong reference to the next node, which increases the [INFO] [stdout] | ------ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `NextNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 14 - Strong(Rc), // Strong reference to the next node, which increases the [INFO] [stdout] 14 + Strong(()), // Strong reference to the next node, which increases the [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> foundations/session4/linked_list/src/main.rs:16:10 [INFO] [stdout] | [INFO] [stdout] 16 | Weak(Weak), // Weak reference to the next node, which does not increase the reference [INFO] [stdout] | ---- ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `NextNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 16 - Weak(Weak), // Weak reference to the next node, which does not increase the reference [INFO] [stdout] 16 + Weak(()), // Weak reference to the next node, which does not increase the reference [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> foundations/session4/linked_list/src/main.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | Strong(Rc), // Strong reference to the next node, which increases the [INFO] [stdout] | ------ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `NextNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 14 - Strong(Rc), // Strong reference to the next node, which increases the [INFO] [stdout] 14 + Strong(()), // Strong reference to the next node, which increases the [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> foundations/session4/linked_list/src/main.rs:16:10 [INFO] [stdout] | [INFO] [stdout] 16 | Weak(Weak), // Weak reference to the next node, which does not increase the reference [INFO] [stdout] | ---- ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `NextNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 16 - Weak(Weak), // Weak reference to the next node, which does not increase the reference [INFO] [stdout] 16 + Weak(()), // Weak reference to the next node, which does not increase the reference [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> foundations/session4/generics_and_iterators/src/main.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 32 | fn iter(&self) -> HashMapBucketIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 32 | fn iter(&self) -> HashMapBucketIter<'_, K, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tempfile v3.15.0 [INFO] [stderr] error: could not compile `openssl-sys` (lib) [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/f77b5bc6c7c84df104f86b0dd01d9490e3923fa8/bin/rustc --crate-name openssl_sys --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/openssl-sys-0.9.104/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("bindgen", "bssl-sys", "openssl-src", "unstable_boringssl", "vendored"))' -C metadata=b9c77785375ebe46 -C extra-filename=-665458b921cc3669 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-5d0b6302957a4ca8.rmeta --cap-lints allow --cap-lints=forbid -l ssl -l crypto --cfg 'osslconf="OPENSSL_NO_IDEA"' --cfg 'osslconf="OPENSSL_NO_SSL3_METHOD"' --cfg openssl --cfg ossl300 --cfg ossl101 --cfg ossl102 --cfg ossl102f --cfg ossl102h --cfg ossl110 --cfg ossl110f --cfg ossl110g --cfg ossl110h --cfg ossl111 --cfg ossl111b --cfg ossl111c --cfg ossl111d --check-cfg 'cfg(osslconf, values("OPENSSL_NO_OCB", "OPENSSL_NO_SM4", "OPENSSL_NO_SEED", "OPENSSL_NO_CHACHA", "OPENSSL_NO_CAST", "OPENSSL_NO_IDEA", "OPENSSL_NO_CAMELLIA", "OPENSSL_NO_RC4", "OPENSSL_NO_BF", "OPENSSL_NO_PSK", "OPENSSL_NO_DEPRECATED_3_0", "OPENSSL_NO_SCRYPT", "OPENSSL_NO_SM3", "OPENSSL_NO_RMD160", "OPENSSL_NO_EC2M", "OPENSSL_NO_OCSP", "OPENSSL_NO_CMS", "OPENSSL_NO_COMP", "OPENSSL_NO_SOCK", "OPENSSL_NO_STDIO", "OPENSSL_NO_EC", "OPENSSL_NO_SSL3_METHOD", "OPENSSL_NO_KRB5", "OPENSSL_NO_TLSEXT", "OPENSSL_NO_SRP", "OPENSSL_NO_RFC3779", "OPENSSL_NO_SHA", "OPENSSL_NO_NEXTPROTONEG", "OPENSSL_NO_ENGINE", "OPENSSL_NO_BUF_FREELISTS"))' --check-cfg 'cfg(openssl)' --check-cfg 'cfg(libressl)' --check-cfg 'cfg(boringssl)' --check-cfg 'cfg(libressl250)' --check-cfg 'cfg(libressl251)' --check-cfg 'cfg(libressl252)' --check-cfg 'cfg(libressl261)' --check-cfg 'cfg(libressl270)' --check-cfg 'cfg(libressl271)' --check-cfg 'cfg(libressl273)' --check-cfg 'cfg(libressl280)' --check-cfg 'cfg(libressl281)' --check-cfg 'cfg(libressl291)' --check-cfg 'cfg(libressl310)' --check-cfg 'cfg(libressl321)' --check-cfg 'cfg(libressl332)' --check-cfg 'cfg(libressl340)' --check-cfg 'cfg(libressl350)' --check-cfg 'cfg(libressl360)' --check-cfg 'cfg(libressl361)' --check-cfg 'cfg(libressl370)' --check-cfg 'cfg(libressl380)' --check-cfg 'cfg(libressl381)' --check-cfg 'cfg(libressl382)' --check-cfg 'cfg(libressl390)' --check-cfg 'cfg(libressl400)' --check-cfg 'cfg(ossl101)' --check-cfg 'cfg(ossl102)' --check-cfg 'cfg(ossl102f)' --check-cfg 'cfg(ossl102h)' --check-cfg 'cfg(ossl110)' --check-cfg 'cfg(ossl110f)' --check-cfg 'cfg(ossl110g)' --check-cfg 'cfg(ossl110h)' --check-cfg 'cfg(ossl111)' --check-cfg 'cfg(ossl111b)' --check-cfg 'cfg(ossl111c)' --check-cfg 'cfg(ossl111d)' --check-cfg 'cfg(ossl300)' --check-cfg 'cfg(ossl310)' --check-cfg 'cfg(ossl320)' --check-cfg 'cfg(ossl330)' --check-cfg 'cfg(ossl340)'` (signal: 9, SIGKILL: kill) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "6ef35aca7d7a6158f325f323ea1420ae34b992657ad357105f162538acf26e3e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6ef35aca7d7a6158f325f323ea1420ae34b992657ad357105f162538acf26e3e", kill_on_drop: false }` [INFO] [stdout] 6ef35aca7d7a6158f325f323ea1420ae34b992657ad357105f162538acf26e3e