[INFO] cloning repository https://github.com/eltondornelas/alabs-live
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eltondornelas/alabs-live" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feltondornelas%2Falabs-live", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feltondornelas%2Falabs-live'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8d85fb87d6194a088729fefa0751cb80b3d4353
[INFO] checking eltondornelas/alabs-live against 1.95.0-beta.7 for beta-1.95-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feltondornelas%2Falabs-live" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eltondornelas/alabs-live
[INFO] finished tweaking git repo https://github.com/eltondornelas/alabs-live
[INFO] tweaked toml for git repo https://github.com/eltondornelas/alabs-live written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eltondornelas/alabs-live on toolchain 1.95.0-beta.7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eltondornelas/alabs-live 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" "+1.95.0-beta.7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8debd7090836f790d598febe2bc39e4da8d25a516b040410a3842438c479ac05
[INFO] running `Command { std: "docker" "start" "-a" "8debd7090836f790d598febe2bc39e4da8d25a516b040410a3842438c479ac05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8debd7090836f790d598febe2bc39e4da8d25a516b040410a3842438c479ac05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8debd7090836f790d598febe2bc39e4da8d25a516b040410a3842438c479ac05", kill_on_drop: false }`
[INFO] [stdout] 8debd7090836f790d598febe2bc39e4da8d25a516b040410a3842438c479ac05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c16601958d7889048016c1b117f0ebaf90670749a9d6cc6e0c85c189b9fcd47
[INFO] running `Command { std: "docker" "start" "-a" "2c16601958d7889048016c1b117f0ebaf90670749a9d6cc6e0c85c189b9fcd47", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.15.0
[INFO] [stderr]    Compiling cc v1.2.30
[INFO] [stderr]    Compiling serde_json v1.0.142
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking socket2 v0.6.0
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking bitflags v2.9.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking indexmap v2.10.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking encoding_rs v0.8.35
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]     Checking crc32fast v1.5.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling openssl-probe v0.1.6
[INFO] [stderr]    Compiling crc v3.3.0
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling multer v3.1.0
[INFO] [stderr]    Compiling openssl-src v300.5.1+3.5.1
[INFO] [stderr]    Compiling futures-channel v0.3.31
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[INFO] [stderr]    Compiling hashlink v0.10.0
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]     Checking futures-intrusive v0.5.0
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]     Checking atoi v2.0.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling virtue v0.0.18
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[INFO] [stderr]     Checking rand_core v0.9.3
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[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking anstyle-parse v0.2.6
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[INFO] [stderr]    Compiling openssl-sys v0.9.109
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[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]     Checking new_debug_unreachable v1.0.6
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking rand_chacha v0.9.0
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[INFO] [stderr]    Compiling noop_proc_macro v0.3.0
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[INFO] [stderr]    Compiling native-tls v0.2.14
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[INFO] [stderr]     Checking anstream v0.6.18
[INFO] [stderr]     Checking loop9 v0.1.5
[INFO] [stderr]     Checking flate2 v1.1.2
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking avif-serialize v0.8.5
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]     Checking zune-core v0.4.12
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]    Compiling bincode_derive v2.0.1
[INFO] [stderr]     Checking clap_lex v0.7.4
[INFO] [stderr]     Checking jpeg-decoder v0.3.2
[INFO] [stderr]     Checking num-rational v0.4.2
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[INFO] [stderr]     Checking exr v1.73.0
[INFO] [stderr]     Checking clap_builder v4.5.37
[INFO] [stderr]     Checking uuid v1.18.0
[INFO] [stderr]     Checking png v0.17.16
[INFO] [stderr]     Checking zune-jpeg v0.4.20
[INFO] [stderr]     Checking image-webp v0.2.3
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]     Checking tiff v0.9.1
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking core_affinity v0.8.3
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]     Checking bincode v2.0.1
[INFO] [stderr]     Checking thread-priority v1.2.0
[INFO] [stderr]     Checking sysinfo v0.36.1
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]     Checking file_read v0.1.0 (/opt/rustwide/workdir/bonus/file_read)
[INFO] [stdout] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout]  --> bonus/file_read/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read_to_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking affinity v0.1.0 (/opt/rustwide/workdir/session2/affinity)
[INFO] [stdout] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout]  --> bonus/file_read/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::read_to_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking workers2 v0.1.0 (/opt/rustwide/workdir/session2/workers2)
[INFO] [stderr]     Checking priority v0.1.0 (/opt/rustwide/workdir/session2/priority)
[INFO] [stderr]     Checking dashing v0.1.0 (/opt/rustwide/workdir/session2/dashing)
[INFO] [stderr]     Checking memory v0.1.0 (/opt/rustwide/workdir/session5/memory)
[INFO] [stdout] warning: static `HIGH_COUNT` is never used
[INFO] [stdout]  --> session2/priority/src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | 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]  --> session2/priority/src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | 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 rwlocks v0.1.0 (/opt/rustwide/workdir/session2/rwlocks)
[INFO] [stderr]     Checking traits v0.1.0 (/opt/rustwide/workdir/session5/traits)
[INFO] [stderr]     Checking best v0.1.0 (/opt/rustwide/workdir/bonus/best)
[INFO] [stderr]     Checking dropping v0.1.0 (/opt/rustwide/workdir/session5/dropping)
[INFO] [stderr]     Checking scope_threads v0.1.0 (/opt/rustwide/workdir/session2/scope_threads)
[INFO] [stdout] warning: trait `DowncastableAnimal` is never used
[INFO] [stdout]   --> session5/traits/src/main.rs:36:11
[INFO] [stdout]    |
[INFO] [stdout] 36 |     trait DowncastableAnimal {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tortoise` is never constructed
[INFO] [stdout]   --> session5/traits/src/main.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     struct Tortoise;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking mutexes v0.1.0 (/opt/rustwide/workdir/session2/mutexes)
[INFO] [stderr]     Checking packing v0.1.0 (/opt/rustwide/workdir/session5/packing)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> bonus/best/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     for i in 0..17 {
[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_world v0.1.0 (/opt/rustwide/workdir/session1/hello_world)
[INFO] [stderr]     Checking parking v0.1.0 (/opt/rustwide/workdir/session2/parking)
[INFO] [stderr]     Checking iterators v0.1.0 (/opt/rustwide/workdir/session5/iterators)
[INFO] [stdout] warning: unused variable: `my_num`
[INFO] [stdout]   --> session5/dropping/src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let my_num = Box::new(12); // does samething of the "SmartPointer"
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking workers v0.1.0 (/opt/rustwide/workdir/session2/workers)
[INFO] [stderr]     Checking generics v0.1.0 (/opt/rustwide/workdir/session5/generics)
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]  --> session5/packing/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct OneByte {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 2 |     a: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]  --> session5/packing/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct TwoBytes {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] 6 |     a: u16,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]   --> session5/packing/src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct FourBytes {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 19 |     a: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking divide_work v0.1.0 (/opt/rustwide/workdir/session2/divide_work)
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> session5/generics/src/main.rs:3:34
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fn just_print_it<T, U>(x: T, y: U)
[INFO] [stdout]   |                                  ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking deadlocks v0.1.0 (/opt/rustwide/workdir/session2/deadlocks)
[INFO] [stdout] warning: unused variable: `behind_you_radians`
[INFO] [stdout]   --> session5/generics/src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let behind_you_radians = Radians::from(behind_you);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_behind_you_radians`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `behind_you_radians2`
[INFO] [stdout]   --> session5/generics/src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let behind_you_radians2: Radians = Degrees(180.0).into();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_behind_you_radians2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_example_1` is never used
[INFO] [stdout]  --> session5/generics/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn generics_example_1() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_example_2` is never used
[INFO] [stdout]   --> session5/generics/src/main.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn generics_example_2() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> session5/generics/src/main.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |         fn iter(&self) -> HashMapBucketIter<K, V> {
[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] 85 |         fn iter(&self) -> HashMapBucketIter<'_, K, V> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking dropping_raii v0.1.0 (/opt/rustwide/workdir/session5/dropping_raii)
[INFO] [stderr]     Checking channels1 v0.1.0 (/opt/rustwide/workdir/session2/channels1)
[INFO] [stderr]     Checking memory_fragmentation v0.1.0 (/opt/rustwide/workdir/session5/memory_fragmentation)
[INFO] [stdout] warning: unused variable: `my_shared`
[INFO] [stdout]  --> session2/deadlocks/src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let my_shared = Mutex::new(0);
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_shared`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ffi v0.1.0 (/opt/rustwide/workdir/session5/ffi)
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir/session1/variables)
[INFO] [stderr]     Checking thread_builder v0.1.0 (/opt/rustwide/workdir/session2/thread_builder)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> session5/dropping_raii/src/main.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn move_me(x: MyStruct) {
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> session5/dropping_raii/src/main.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let y = MyStruct::new(2);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_drop`
[INFO] [stdout]   --> session5/dropping_raii/src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let has_drop = HasDroppables { x: MyStruct::new(4) };
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_drop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]  --> session5/dropping_raii/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct HasDroppables {
[INFO] [stdout]   |        ------------- field in this struct
[INFO] [stdout] 6 |     x: MyStruct,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> session1/variables/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double_or_nothing` is never used
[INFO] [stdout]  --> session1/variables/src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn double_or_nothing(n: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet` is never used
[INFO] [stdout]   --> session1/variables/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn greet(s: String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet_borrow` is never used
[INFO] [stdout]   --> session1/variables/src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn greet_borrow(s: &String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet_borrow_mut` is never used
[INFO] [stdout]   --> session1/variables/src/main.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn greet_borrow_mut(s: &mut String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> session5/generics/src/main.rs:3:34
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fn just_print_it<T, U>(x: T, y: U)
[INFO] [stdout]   |                                  ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `behind_you_radians`
[INFO] [stdout]   --> session5/generics/src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let behind_you_radians = Radians::from(behind_you);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_behind_you_radians`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `behind_you_radians2`
[INFO] [stdout]   --> session5/generics/src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let behind_you_radians2: Radians = Degrees(180.0).into();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_behind_you_radians2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_example_1` is never used
[INFO] [stdout]  --> session5/generics/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn generics_example_1() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_example_2` is never used
[INFO] [stdout]   --> session5/generics/src/main.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn generics_example_2() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> session5/generics/src/main.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |         fn iter(&self) -> HashMapBucketIter<K, V> {
[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] 85 |         fn iter(&self) -> HashMapBucketIter<'_, K, V> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking cycles v0.1.0 (/opt/rustwide/workdir/session5/cycles)
[INFO] [stderr]     Checking footgun v0.1.0 (/opt/rustwide/workdir/session2/footgun)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> session5/dropping_raii/src/main.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn move_me(x: MyStruct) {
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> session5/dropping_raii/src/main.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let y = MyStruct::new(2);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `has_drop`
[INFO] [stdout]   --> session5/dropping_raii/src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let has_drop = HasDroppables { x: MyStruct::new(4) };
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_has_drop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]  --> session5/dropping_raii/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct HasDroppables {
[INFO] [stdout]   |        ------------- field in this struct
[INFO] [stdout] 6 |     x: MyStruct,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cycle_problem_example` is never used
[INFO] [stdout]  --> session5/cycles/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn cycle_problem_example() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> session5/cycles/src/main.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     Strong(Rc<Node>), // strong reference/pointer
[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] 48 -     Strong(Rc<Node>), // strong reference/pointer
[INFO] [stdout] 48 +     Strong(()), // strong reference/pointer
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> session5/cycles/src/main.rs:49:10
[INFO] [stdout]    |
[INFO] [stdout] 49 |     Weak(Weak<Node>), // creating a weak link
[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] 49 -     Weak(Weak<Node>), // creating a weak link
[INFO] [stdout] 49 +     Weak(()), // creating a weak link
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cycle_problem_example` is never used
[INFO] [stdout]  --> session5/cycles/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn cycle_problem_example() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> session5/cycles/src/main.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     Strong(Rc<Node>), // strong reference/pointer
[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] 48 -     Strong(Rc<Node>), // strong reference/pointer
[INFO] [stdout] 48 +     Strong(()), // strong reference/pointer
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> session5/cycles/src/main.rs:49:10
[INFO] [stdout]    |
[INFO] [stdout] 49 |     Weak(Weak<Node>), // creating a weak link
[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] 49 -     Weak(Weak<Node>), // creating a weak link
[INFO] [stdout] 49 +     Weak(()), // creating a weak link
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking refc v0.1.0 (/opt/rustwide/workdir/session5/refc)
[INFO] [stderr]     Checking alab-live v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir/session2/hello)
[INFO] [stdout] warning: function `arc_example_3` is never used
[INFO] [stdout]  --> session5/refc/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn arc_example_3() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> session5/refc/src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl SharedData {
[INFO] [stdout]   |     --------------- associated function in this implementation
[INFO] [stdout] 9 |         fn new(s: &str) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc_example_2` is never used
[INFO] [stdout]   --> session5/refc/src/main.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn arc_example_2() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc_example_1` is never used
[INFO] [stdout]   --> session5/refc/src/main.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn arc_example_1() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> session5/refc/src/main.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     impl Droppable {
[INFO] [stdout]    |     -------------- associated function in this implementation
[INFO] [stdout] 60 |         fn new(n: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rc_example` is never used
[INFO] [stdout]    --> session5/refc/src/main.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn rc_example() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> session5/refc/src/main.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 106 |     impl Droppable {
[INFO] [stdout]     |     -------------- associated function in this implementation
[INFO] [stdout] 107 |         fn new(n: i32) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DowncastableAnimal` is never used
[INFO] [stdout]   --> session5/traits/src/main.rs:36:11
[INFO] [stdout]    |
[INFO] [stdout] 36 |     trait DowncastableAnimal {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tortoise` is never constructed
[INFO] [stdout]   --> session5/traits/src/main.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     struct Tortoise;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking lifetimes v0.1.0 (/opt/rustwide/workdir/session5/lifetimes)
[INFO] [stdout] warning: unused variable: `my_shared`
[INFO] [stdout]  --> session2/deadlocks/src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let my_shared = Mutex::new(0);
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_shared`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> session1/variables/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[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: `i`
[INFO] [stdout]   --> bonus/best/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     for i in 0..17 {
[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: constant `N` is never used
[INFO] [stdout]   --> bonus/best/src/main.rs:17:15
[INFO] [stdout]    |
[INFO] [stdout] 17 |         const N:i32 = 1;
[INFO] [stdout]    |               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_thread` is never used
[INFO] [stdout]  --> session2/hello/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn hello_thread(n: u32) {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]  --> session5/lifetimes/src/main.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn borrow<'a>(i: &'a i32, j: &'a i32) -> &'a i32 {
[INFO] [stdout]   |                           ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow` is never used
[INFO] [stdout]  --> session5/lifetimes/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn borrow<'a>(i: &'a i32, j: &'a i32) -> &'a i32 {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]  --> session5/lifetimes/src/main.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn borrow<'a>(i: &'a i32, j: &'a i32) -> &'a i32 {
[INFO] [stdout]   |                           ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow` is never used
[INFO] [stdout]  --> session5/lifetimes/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn borrow<'a>(i: &'a i32, j: &'a i32) -> &'a i32 {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double_or_nothing` is never used
[INFO] [stdout]  --> session1/variables/src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn double_or_nothing(n: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet` is never used
[INFO] [stdout]   --> session1/variables/src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn greet(s: String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet_borrow` is never used
[INFO] [stdout]   --> session1/variables/src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn greet_borrow(s: &String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet_borrow_mut` is never used
[INFO] [stdout]   --> session1/variables/src/main.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn greet_borrow_mut(s: &mut String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]  --> session5/packing/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct OneByte {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 2 |     a: u8,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]  --> session5/packing/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct TwoBytes {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] 6 |     a: u16,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `a` is never read
[INFO] [stdout]   --> session5/packing/src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct FourBytes {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 19 |     a: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc_example_3` is never used
[INFO] [stdout]  --> session5/refc/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn arc_example_3() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> session5/refc/src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl SharedData {
[INFO] [stdout]   |     --------------- associated function in this implementation
[INFO] [stdout] 9 |         fn new(s: &str) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc_example_2` is never used
[INFO] [stdout]   --> session5/refc/src/main.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn arc_example_2() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc_example_1` is never used
[INFO] [stdout]   --> session5/refc/src/main.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn arc_example_1() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> session5/refc/src/main.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     impl Droppable {
[INFO] [stdout]    |     -------------- associated function in this implementation
[INFO] [stdout] 60 |         fn new(n: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rc_example` is never used
[INFO] [stdout]    --> session5/refc/src/main.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn rc_example() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> session5/refc/src/main.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 106 |     impl Droppable {
[INFO] [stdout]     |     -------------- associated function in this implementation
[INFO] [stdout] 107 |         fn new(n: i32) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_num`
[INFO] [stdout]   --> session5/dropping/src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let my_num = Box::new(12); // does samething of the "SmartPointer"
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_thread` is never used
[INFO] [stdout]  --> session2/hello/src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn hello_thread(n: u32) {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v2.0.15
[INFO] [stderr]    Compiling equator-macro v0.4.2
[INFO] [stderr]    Compiling bytemuck_derive v1.10.1
[INFO] [stderr]     Checking equator v0.4.2
[INFO] [stderr]    Compiling profiling-procmacros v1.0.17
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking aligned-vec v0.6.4
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]     Checking v_frame v0.3.9
[INFO] [stderr]     Checking profiling v1.0.17
[INFO] [stderr]     Checking av1-grain v0.2.4
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking thiserror v2.0.15
[INFO] [stderr]     Checking bytemuck v1.23.2
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stderr]     Checking axum-core v0.5.2
[INFO] [stderr]    Compiling async-recursion v1.1.1
[INFO] [stderr]     Checking qoi v0.4.1
[INFO] [stderr]    Compiling zerovec v0.11.2
[INFO] [stderr]    Compiling zerotrie v0.2.2
[INFO] [stderr] warning: libsqlite3-sys@0.30.1: cc: fatal error: Killed signal terminated program cc1
[INFO] [stderr] warning: libsqlite3-sys@0.30.1: compilation terminated.
[INFO] [stderr] error: failed to run custom build command for `libsqlite3-sys v0.30.1`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libsqlite3-sys-2e96fcc5096b5250/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-env-changed=LIBSQLITE3_SYS_USE_PKG_CONFIG
[INFO] [stderr]   cargo:include=/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/libsqlite3-sys-0.30.1/sqlite3
[INFO] [stderr]   cargo:rerun-if-changed=sqlite3/sqlite3.c
[INFO] [stderr]   cargo:rerun-if-changed=sqlite3/wasm32-wasi-vfs.c
[INFO] [stderr]   cargo:rerun-if-env-changed=SQLITE_MAX_VARIABLE_NUMBER
[INFO] [stderr]   cargo:rerun-if-env-changed=SQLITE_MAX_EXPR_DEPTH
[INFO] [stderr]   cargo:rerun-if-env-changed=SQLITE_MAX_COLUMN
[INFO] [stderr]   cargo:rerun-if-env-changed=LIBSQLITE3_FLAGS
[INFO] [stderr]   OUT_DIR = Some(/opt/rustwide/target/debug/build/libsqlite3-sys-bfe9a0e049e292e7/out)
[INFO] [stderr]   OPT_LEVEL = Some(0)
[INFO] [stderr]   TARGET = Some(x86_64-unknown-linux-gnu)
[INFO] [stderr]   HOST = Some(x86_64-unknown-linux-gnu)
[INFO] [stderr]   cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-gnu
[INFO] [stderr]   CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr]   cargo:rerun-if-env-changed=CC_x86_64_unknown_linux_gnu
[INFO] [stderr]   CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr]   cargo:rerun-if-env-changed=HOST_CC
[INFO] [stderr]   HOST_CC = None
[INFO] [stderr]   cargo:rerun-if-env-changed=CC
[INFO] [stderr]   CC = None
[INFO] [stderr]   cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
[INFO] [stderr]   RUSTC_WRAPPER = None
[INFO] [stderr]   cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
[INFO] [stderr]   CRATE_CC_NO_DEFAULTS = None
[INFO] [stderr]   DEBUG = Some(true)
[INFO] [stderr]   CARGO_CFG_TARGET_FEATURE = Some(fxsr,sse,sse2)
[INFO] [stderr]   cargo:rerun-if-env-changed=CFLAGS
[INFO] [stderr]   CFLAGS = None
[INFO] [stderr]   cargo:rerun-if-env-changed=HOST_CFLAGS
[INFO] [stderr]   HOST_CFLAGS = None
[INFO] [stderr]   cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_gnu
[INFO] [stderr]   CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr]   cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
[INFO] [stderr]   CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr]   CARGO_ENCODED_RUSTFLAGS = Some(--cap-lints=warn)
[INFO] [stderr]   cargo:warning=cc: fatal error: Killed signal terminated program cc1
[INFO] [stderr]   cargo:warning=compilation terminated.
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   error occurred in cc-rs: command did not execute successfully (status code exit status: 1): LC_ALL="C" "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-gdwarf-4" "-fno-omit-frame-pointer" "-m64" "-DSQLITE_CORE" "-DSQLITE_DEFAULT_FOREIGN_KEYS=1" "-DSQLITE_ENABLE_API_ARMOR" "-DSQLITE_ENABLE_COLUMN_METADATA" "-DSQLITE_ENABLE_DBSTAT_VTAB" "-DSQLITE_ENABLE_FTS3" "-DSQLITE_ENABLE_FTS3_PARENTHESIS" "-DSQLITE_ENABLE_FTS5" "-DSQLITE_ENABLE_JSON1" "-DSQLITE_ENABLE_LOAD_EXTENSION=1" "-DSQLITE_ENABLE_MEMORY_MANAGEMENT" "-DSQLITE_ENABLE_RTREE" "-DSQLITE_ENABLE_STAT4" "-DSQLITE_SOUNDEX" "-DSQLITE_THREADSAFE=1" "-DSQLITE_USE_URI" "-DHAVE_USLEEP=1" "-DHAVE_ISNAN" "-D_POSIX_THREAD_SAFE_FUNCTIONS" "-DHAVE_LOCALTIME_R" "-DSQLITE_ENABLE_UNLOCK_NOTIFY" "-o" "/opt/rustwide/target/debug/build/libsqlite3-sys-bfe9a0e049e292e7/out/c877a2978823c39d-sqlite3.o" "-c" "sqlite3/sqlite3.c"
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2c16601958d7889048016c1b117f0ebaf90670749a9d6cc6e0c85c189b9fcd47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c16601958d7889048016c1b117f0ebaf90670749a9d6cc6e0c85c189b9fcd47", kill_on_drop: false }`
[INFO] [stdout] 2c16601958d7889048016c1b117f0ebaf90670749a9d6cc6e0c85c189b9fcd47
