[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#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589 [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 54e27f559f23913c1d5afb1a0f0114e9e61b81b8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking clvx/ultimate-rust-foundations against try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589 [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 54e27f559f23913c1d5afb1a0f0114e9e61b81b8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking clvx/ultimate-rust-foundations against try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589 [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 54e27f559f23913c1d5afb1a0f0114e9e61b81b8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d71342dc67a537355db034a48f24030468e6090f7d97ff37fa787a66e18d79af [INFO] running `Command { std: "docker" "start" "-a" "d71342dc67a537355db034a48f24030468e6090f7d97ff37fa787a66e18d79af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d71342dc67a537355db034a48f24030468e6090f7d97ff37fa787a66e18d79af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d71342dc67a537355db034a48f24030468e6090f7d97ff37fa787a66e18d79af", kill_on_drop: false }` [INFO] [stdout] d71342dc67a537355db034a48f24030468e6090f7d97ff37fa787a66e18d79af [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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 83e542510c14de1b5acf1945cfb0f07a7ec223ae6adc00cbe278d1679d0f8a6d [INFO] running `Command { std: "docker" "start" "-a" "83e542510c14de1b5acf1945cfb0f07a7ec223ae6adc00cbe278d1679d0f8a6d", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.96 [INFO] [stderr] Checking parking_lot_core v0.9.10 [INFO] [stderr] Compiling jobserver v0.1.32 [INFO] [stderr] Checking foldhash v0.1.4 [INFO] [stderr] Compiling writeable v0.5.5 [INFO] [stderr] Compiling litemap v0.7.4 [INFO] [stderr] Checking cpufeatures v0.2.16 [INFO] [stderr] Compiling icu_locid_transform_data v1.5.0 [INFO] [stderr] Compiling icu_properties_data v1.5.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling icu_normalizer_data v1.5.0 [INFO] [stderr] Compiling utf16_iter v1.0.5 [INFO] [stderr] Compiling write16 v1.0.0 [INFO] [stderr] Compiling socket2 v0.5.8 [INFO] [stderr] Compiling mio v1.0.3 [INFO] [stderr] Checking hashbrown v0.15.2 [INFO] [stderr] Checking sha2 v0.10.8 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling bytes v1.9.0 [INFO] [stderr] Compiling cc v1.2.10 [INFO] [stderr] Compiling itoa v1.0.14 [INFO] [stderr] Compiling ryu v1.0.18 [INFO] [stderr] Checking parking_lot v0.12.3 [INFO] [stderr] Checking getrandom v0.3.2 [INFO] [stderr] Compiling tracing-core v0.1.33 [INFO] [stderr] Compiling rustix v0.38.44 [INFO] [stderr] Compiling concurrent-queue v2.5.0 [INFO] [stderr] Compiling futures-util v0.3.31 [INFO] [stderr] Compiling openssl-probe v0.1.5 [INFO] [stderr] Checking rand_core v0.9.3 [INFO] [stderr] Compiling crossbeam-queue v0.3.12 [INFO] [stderr] Compiling crc v3.2.1 [INFO] [stderr] Checking indexmap v2.7.1 [INFO] [stderr] Compiling event-listener v5.4.0 [INFO] [stderr] Compiling futures-intrusive v0.5.0 [INFO] [stderr] Compiling tokio v1.44.1 [INFO] [stderr] Compiling spin v0.9.8 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling getrandom v0.2.15 [INFO] [stderr] Compiling flume v0.11.1 [INFO] [stderr] Checking hashlink v0.10.0 [INFO] [stderr] Checking atoi v2.0.0 [INFO] [stderr] Checking http v0.2.12 [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 axum v0.6.20 [INFO] [stderr] Checking tracing-log v0.2.0 [INFO] [stderr] Checking clap_builder v4.5.27 [INFO] [stderr] Checking time v0.3.41 [INFO] [stderr] Checking http-range-header v0.4.2 [INFO] [stderr] Checking dashmap v6.1.0 [INFO] [stderr] Checking core_affinity v0.8.1 [INFO] [stderr] Checking thread-priority v1.2.0 [INFO] [stderr] Checking flate2 v1.0.35 [INFO] [stderr] Checking affinity v0.1.0 (/opt/rustwide/workdir/foundations/session2/affinity) [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 http-body v0.4.6 [INFO] [stderr] Checking channels v0.1.0 (/opt/rustwide/workdir/foundations/session2/channels) [INFO] [stderr] Checking divide_work v0.1.0 (/opt/rustwide/workdir/foundations/session2/divide_work) [INFO] [stderr] Checking operator_overloading v0.1.0 (/opt/rustwide/workdir/foundations/session4/operator_overloading) [INFO] [stderr] Checking linked_list v0.1.0 (/opt/rustwide/workdir/foundations/session4/linked_list) [INFO] [stderr] Checking mutexes v0.1.0 (/opt/rustwide/workdir/foundations/session2/mutexes) [INFO] [stderr] Checking dashing v0.1.0 (/opt/rustwide/workdir/foundations/session2/dashing) [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: 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 hello v0.1.0 (/opt/rustwide/workdir/foundations/session2/hello) [INFO] [stderr] Checking footgun v0.1.0 (/opt/rustwide/workdir/foundations/session2/footgun) [INFO] [stderr] Checking workers v0.1.0 (/opt/rustwide/workdir/foundations/session2/workers) [INFO] [stderr] Checking lifetimes v0.1.0 (/opt/rustwide/workdir/foundations/session4/lifetimes) [INFO] [stderr] Checking refcell v0.1.0 (/opt/rustwide/workdir/foundations/session4/refcell) [INFO] [stderr] Checking scoped_threads v0.1.0 (/opt/rustwide/workdir/foundations/session2/scoped_threads) [INFO] [stderr] Checking tprio v0.1.0 (/opt/rustwide/workdir/foundations/session2/tprio) [INFO] [stderr] Checking deadlocks v0.1.0 (/opt/rustwide/workdir/foundations/session2/deadlocks) [INFO] [stderr] Checking smart_pointer v0.1.0 (/opt/rustwide/workdir/foundations/session4/smart_pointer) [INFO] [stderr] Checking external_arc_mutex v0.1.0 (/opt/rustwide/workdir/foundations/session4/external_arc_mutex) [INFO] [stderr] Checking atomicrefcount v0.1.0 (/opt/rustwide/workdir/foundations/session4/atomicrefcount) [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 generics v0.1.0 (/opt/rustwide/workdir/foundations/session4/generics_and_iterators) [INFO] [stderr] Checking thread_builder v0.1.0 (/opt/rustwide/workdir/foundations/session2/thread_builder) [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 dropping v0.1.0 (/opt/rustwide/workdir/foundations/session4/dropping) [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 variables v0.1.0 (/opt/rustwide/workdir/foundations/session1/variables) [INFO] [stderr] Checking brotli v7.0.0 [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 parking v0.1.0 (/opt/rustwide/workdir/foundations/session2/parking) [INFO] [stderr] Checking traits v0.1.0 (/opt/rustwide/workdir/foundations/session4/traits) [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] Checking refcount v0.1.0 (/opt/rustwide/workdir/foundations/session4/refcount) [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 hello_world v0.1.0 (/opt/rustwide/workdir/foundations/session1/hello_world) [INFO] [stderr] Checking save_dynamic_bytes v0.1.0 (/opt/rustwide/workdir/foundations/session4/save_dynamic_bytes) [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] [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] [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 openssl v0.10.68 [INFO] [stderr] Compiling native-tls v0.2.12 [INFO] [stderr] Compiling futures-executor v0.3.31 [INFO] [stderr] Compiling tempfile v3.15.0 [INFO] [stderr] error: could not compile `syn` (lib) [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/54e27f559f23913c1d5afb1a0f0114e9e61b81b8/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.96/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 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=1aa00f460eeb2776 -C extra-filename=-843800906dbcd92b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-844c68018ef35cd7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5e899913a7e6f36c.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-13328ff8d6cc16fd.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `tokio` (lib) [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/54e27f559f23913c1d5afb1a0f0114e9e61b81b8/bin/rustc --crate-name tokio --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.1/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 --warn=unexpected_cfgs --check-cfg 'cfg(fuzzing)' --check-cfg 'cfg(loom)' --check-cfg 'cfg(mio_unsupported_force_poll_poll)' --check-cfg 'cfg(tokio_allow_from_blocking_fd)' --check-cfg 'cfg(tokio_internal_mt_counters)' --check-cfg 'cfg(tokio_no_parking_lot)' --check-cfg 'cfg(tokio_no_tuning_tests)' --check-cfg 'cfg(tokio_taskdump)' --check-cfg 'cfg(tokio_unstable)' --cfg 'feature="bytes"' --cfg 'feature="default"' --cfg 'feature="fs"' --cfg 'feature="io-util"' --cfg 'feature="libc"' --cfg 'feature="mio"' --cfg 'feature="net"' --cfg 'feature="rt"' --cfg 'feature="socket2"' --cfg 'feature="sync"' --cfg 'feature="time"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("bytes", "default", "fs", "full", "io-std", "io-util", "libc", "macros", "mio", "net", "parking_lot", "process", "rt", "rt-multi-thread", "signal", "signal-hook-registry", "socket2", "sync", "test-util", "time", "tokio-macros", "tracing", "windows-sys"))' -C metadata=000ea0f14dbe52bc -C extra-filename=-da56b7d33f5335ba --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-0944ea3b95acd97b.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-5d0b6302957a4ca8.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-1bc9ed7a0aeca261.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-2ecca6b667797f49.rmeta --extern socket2=/opt/rustwide/target/debug/deps/libsocket2-da89fbeae1001642.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill) [INFO] running `Command { std: "docker" "inspect" "83e542510c14de1b5acf1945cfb0f07a7ec223ae6adc00cbe278d1679d0f8a6d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83e542510c14de1b5acf1945cfb0f07a7ec223ae6adc00cbe278d1679d0f8a6d", kill_on_drop: false }` [INFO] [stdout] 83e542510c14de1b5acf1945cfb0f07a7ec223ae6adc00cbe278d1679d0f8a6d