[INFO] cloning repository https://github.com/iamseki/studies
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamseki/studies" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamseki%2Fstudies", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamseki%2Fstudies'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38993ceb5aafe466ad78c10ad94bc498622607ab
[INFO] testing iamseki/studies against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamseki%2Fstudies" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/iamseki/studies
[INFO] finished tweaking git repo https://github.com/iamseki/studies
[INFO] tweaked toml for git repo https://github.com/iamseki/studies written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/iamseki/studies on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/iamseki/studies 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37830a9a8b8ac4e7bc3f0309eb3be3182de7153be442170bbf8689d77dc2651c
[INFO] running `Command { std: "docker" "start" "-a" "37830a9a8b8ac4e7bc3f0309eb3be3182de7153be442170bbf8689d77dc2651c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37830a9a8b8ac4e7bc3f0309eb3be3182de7153be442170bbf8689d77dc2651c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37830a9a8b8ac4e7bc3f0309eb3be3182de7153be442170bbf8689d77dc2651c", kill_on_drop: false }`
[INFO] [stdout] 37830a9a8b8ac4e7bc3f0309eb3be3182de7153be442170bbf8689d77dc2651c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9574aef61aee623480c6239831455312578da17cf9cbe1ae04d372c8c55a0c0d
[INFO] running `Command { std: "docker" "start" "-a" "9574aef61aee623480c6239831455312578da17cf9cbe1ae04d372c8c55a0c0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling _rust_math v0.1.0 (/opt/rustwide/workdir/libs/rust/math)
[INFO] [stderr]    Compiling _rust_iterators_n_closures v0.1.0 (/opt/rustwide/workdir/apps/rust/iterators_n_closures)
[INFO] [stderr]    Compiling _rust_web_server v0.1.0 (/opt/rustwide/workdir/apps/rust/web_server)
[INFO] [stderr]    Compiling _rust_generics v0.1.0 (/opt/rustwide/workdir/apps/rust/generics)
[INFO] [stderr]    Compiling _rust_smart_pointers v0.1.0 (/opt/rustwide/workdir/apps/rust/smart_pointers)
[INFO] [stderr]    Compiling _rust_lib v0.1.0 (/opt/rustwide/workdir/apps/rust/lib)
[INFO] [stderr]    Compiling _rust_minigrep v0.1.0 (/opt/rustwide/workdir/apps/rust/minigrep)
[INFO] [stderr]    Compiling _rust_concurrency v0.1.0 (/opt/rustwide/workdir/apps/rust/concurrency)
[INFO] [stderr]    Compiling _rust_enums v0.1.0 (/opt/rustwide/workdir/apps/rust/enums)
[INFO] [stderr]    Compiling _rust_patterns_matching v0.1.0 (/opt/rustwide/workdir/apps/rust/patterns_matching)
[INFO] [stderr]    Compiling _rust_ownership_mistakes v0.1.0 (/opt/rustwide/workdir/apps/rust/ownership_mistakes)
[INFO] [stderr]    Compiling _rust_slice v0.1.0 (/opt/rustwide/workdir/apps/rust/slice)
[INFO] [stderr]    Compiling _rust_oop v0.1.0 (/opt/rustwide/workdir/apps/rust/oop)
[INFO] [stderr]    Compiling _rust_structs v0.1.0 (/opt/rustwide/workdir/apps/rust/structs)
[INFO] [stderr]    Compiling _rust_errors v0.1.0 (/opt/rustwide/workdir/apps/rust/errors)
[INFO] [stderr]    Compiling _rust_ds v0.1.0 (/opt/rustwide/workdir/apps/rust/ds)
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]  --> apps/rust/enums/src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     V4(u8, u8, u8, u8),
[INFO] [stdout]   |     -- ^^  ^^  ^^  ^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 7 -     V4(u8, u8, u8, u8),
[INFO] [stdout] 7 +     V4((), (), (), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> apps/rust/patterns_matching/src/main.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> apps/rust/enums/src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     V6(String),
[INFO] [stdout]   |     -- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddr` 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] 8 -     V6(String),
[INFO] [stdout] 8 +     V6(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> apps/rust/enums/src/main.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Write(String),
[INFO] [stdout]    |     ----- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[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 -     Write(String),
[INFO] [stdout] 14 +     Write(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]   --> apps/rust/enums/src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 12 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     Move { x: i32, y: i32},
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     Write(String),
[INFO] [stdout] 15 |     ChangeColor(i32, i32, i32)
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> apps/rust/smart_pointers/src/reference_cycle.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stdout]    |     ---- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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] 10 -     Cons(i32, RefCell<Rc<List>>),
[INFO] [stdout] 10 +     Cons((), RefCell<Rc<List>>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `children` are never read
[INFO] [stdout]   --> apps/rust/smart_pointers/src/reference_cycle.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Node {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 48 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 49 |     parent: RefCell<Weak<Node>>,
[INFO] [stdout] 50 |     children: RefCell<Vec<Rc<Node>>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]  --> apps/rust/lib/src/restaurant.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Breakefast {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 2 |   pub toast: String,
[INFO] [stdout] 3 |   seasonal_fruit: String
[INFO] [stdout]   |   ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             x += 1;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:28:36
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let add_one_closure = |mut x| {
[INFO] [stdout]    |                                    ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut num_red = 0;
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut num_blue = 0;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]  --> apps/rust/iterators_n_closures/src/shoes_company.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Shoe {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoes_in_size` is never used
[INFO] [stdout]  --> apps/rust/iterators_n_closures/src/shoes_company.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> libs/rust/math/src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> libs/rust/math/src/lib.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 11 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `internal_adder` is never used
[INFO] [stdout]   --> libs/rust/math/src/lib.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn internal_adder(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> libs/rust/math/src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 39 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> apps/rust/ds/src/main.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Int(i32),
[INFO] [stdout]    |         --- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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] 61 -         Int(i32),
[INFO] [stdout] 61 +         Int(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> apps/rust/ds/src/main.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Float(f64),
[INFO] [stdout]    |         ----- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` 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] 62 -         Float(f64),
[INFO] [stdout] 62 +         Float(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> apps/rust/ds/src/main.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |         Text(String)
[INFO] [stdout]    |         ---- ^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadsheetCell` 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] 63 -         Text(String)
[INFO] [stdout] 63 +         Text(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Rgb` is never constructed
[INFO] [stdout]   --> apps/rust/patterns_matching/src/main.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     enum Color {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] 81 |         Rgb(i32, i32, i32),
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]   --> apps/rust/patterns_matching/src/main.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     enum Message {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] 86 |         Quit,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 87 |         Move { x: i32, y: i32 },
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 88 |         Write(String),
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `y` and `z` are never read
[INFO] [stdout]    --> apps/rust/patterns_matching/src/main.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     struct Point {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 135 |         x: i32,
[INFO] [stdout] 136 |         y: i32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 137 |         z: i32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling _rust_testing v0.1.0 (/opt/rustwide/workdir/apps/rust/testing)
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> apps/rust/generics/src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     struct Point<T, U> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 66 |         x: T,
[INFO] [stdout]    |         ^
[INFO] [stdout] 67 |         y: U,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> apps/rust/smart_pointers/src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> apps/rust/smart_pointers/src/main.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::prelude::v1`
[INFO] [stdout]  --> apps/rust/iterators_n_closures/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::prelude::v1;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.17s
[INFO] running `Command { std: "docker" "inspect" "9574aef61aee623480c6239831455312578da17cf9cbe1ae04d372c8c55a0c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9574aef61aee623480c6239831455312578da17cf9cbe1ae04d372c8c55a0c0d", kill_on_drop: false }`
[INFO] [stdout] 9574aef61aee623480c6239831455312578da17cf9cbe1ae04d372c8c55a0c0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef6d768420b25c5733622ed10820d3a8b15a35df41b746d4ea772ca98aec4488
[INFO] running `Command { std: "docker" "start" "-a" "ef6d768420b25c5733622ed10820d3a8b15a35df41b746d4ea772ca98aec4488", kill_on_drop: false }`
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> libs/rust/math/src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling _rust_smart_pointers v0.1.0 (/opt/rustwide/workdir/apps/rust/smart_pointers)
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> libs/rust/math/src/lib.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 11 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling _rust_lib v0.1.0 (/opt/rustwide/workdir/apps/rust/lib)
[INFO] [stdout] warning: function `internal_adder` is never used
[INFO] [stdout]   --> libs/rust/math/src/lib.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn internal_adder(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> libs/rust/math/src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 39 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]  --> apps/rust/lib/src/restaurant.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Breakefast {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 2 |   pub toast: String,
[INFO] [stdout] 3 |   seasonal_fruit: String
[INFO] [stdout]   |   ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> apps/rust/smart_pointers/src/reference_cycle.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stdout]    |     ---- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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] 10 -     Cons(i32, RefCell<Rc<List>>),
[INFO] [stdout] 10 +     Cons((), RefCell<Rc<List>>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `children` are never read
[INFO] [stdout]   --> apps/rust/smart_pointers/src/reference_cycle.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Node {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 48 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 49 |     parent: RefCell<Weak<Node>>,
[INFO] [stdout] 50 |     children: RefCell<Vec<Rc<Node>>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             x += 1;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:28:36
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let add_one_closure = |mut x| {
[INFO] [stdout]    |                                    ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut num_red = 0;
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut num_blue = 0;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]  --> apps/rust/iterators_n_closures/src/shoes_company.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Shoe {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoes_in_size` is never used
[INFO] [stdout]  --> apps/rust/iterators_n_closures/src/shoes_company.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling _rust_testing v0.1.0 (/opt/rustwide/workdir/apps/rust/testing)
[INFO] [stderr]    Compiling _rust_minigrep v0.1.0 (/opt/rustwide/workdir/apps/rust/minigrep)
[INFO] [stderr]    Compiling _rust_iterators_n_closures v0.1.0 (/opt/rustwide/workdir/apps/rust/iterators_n_closures)
[INFO] [stderr]    Compiling _rust_concurrency v0.1.0 (/opt/rustwide/workdir/apps/rust/concurrency)
[INFO] [stderr]    Compiling _rust_generics v0.1.0 (/opt/rustwide/workdir/apps/rust/generics)
[INFO] [stderr]    Compiling _rust_web_server v0.1.0 (/opt/rustwide/workdir/apps/rust/web_server)
[INFO] [stderr]    Compiling _rust_enums v0.1.0 (/opt/rustwide/workdir/apps/rust/enums)
[INFO] [stderr]    Compiling _rust_structs v0.1.0 (/opt/rustwide/workdir/apps/rust/structs)
[INFO] [stderr]    Compiling _rust_slice v0.1.0 (/opt/rustwide/workdir/apps/rust/slice)
[INFO] [stdout] warning: unused import: `core::prelude::v1`
[INFO] [stdout]  --> apps/rust/iterators_n_closures/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::prelude::v1;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]  --> apps/rust/enums/src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     V4(u8, u8, u8, u8),
[INFO] [stdout]   |     -- ^^  ^^  ^^  ^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 7 -     V4(u8, u8, u8, u8),
[INFO] [stdout] 7 +     V4((), (), (), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> apps/rust/enums/src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     V6(String),
[INFO] [stdout]   |     -- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddr` 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] 8 -     V6(String),
[INFO] [stdout] 8 +     V6(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> apps/rust/enums/src/main.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Write(String),
[INFO] [stdout]    |     ----- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[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 -     Write(String),
[INFO] [stdout] 14 +     Write(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]   --> apps/rust/enums/src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 12 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     Move { x: i32, y: i32},
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     Write(String),
[INFO] [stdout] 15 |     ChangeColor(i32, i32, i32)
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> apps/rust/smart_pointers/src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> apps/rust/smart_pointers/src/main.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling _rust_oop v0.1.0 (/opt/rustwide/workdir/apps/rust/oop)
[INFO] [stderr]    Compiling _rust_ds v0.1.0 (/opt/rustwide/workdir/apps/rust/ds)
[INFO] [stderr]    Compiling _rust_ownership_mistakes v0.1.0 (/opt/rustwide/workdir/apps/rust/ownership_mistakes)
[INFO] [stderr]    Compiling _rust_patterns_matching v0.1.0 (/opt/rustwide/workdir/apps/rust/patterns_matching)
[INFO] [stderr]    Compiling _rust_errors v0.1.0 (/opt/rustwide/workdir/apps/rust/errors)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> apps/rust/patterns_matching/src/main.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Rgb` is never constructed
[INFO] [stdout]   --> apps/rust/patterns_matching/src/main.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     enum Color {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] 81 |         Rgb(i32, i32, i32),
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]   --> apps/rust/patterns_matching/src/main.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     enum Message {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] 86 |         Quit,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 87 |         Move { x: i32, y: i32 },
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 88 |         Write(String),
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `y` and `z` are never read
[INFO] [stdout]    --> apps/rust/patterns_matching/src/main.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     struct Point {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 135 |         x: i32,
[INFO] [stdout] 136 |         y: i32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 137 |         z: i32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling _rust_math v0.1.0 (/opt/rustwide/workdir/libs/rust/math)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> apps/rust/smart_pointers/src/reference_cycle.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stdout]    |     ---- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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] 10 -     Cons(i32, RefCell<Rc<List>>),
[INFO] [stdout] 10 +     Cons((), RefCell<Rc<List>>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `children` are never read
[INFO] [stdout]   --> apps/rust/smart_pointers/src/reference_cycle.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Node {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 48 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 49 |     parent: RefCell<Weak<Node>>,
[INFO] [stdout] 50 |     children: RefCell<Vec<Rc<Node>>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]  --> apps/rust/lib/src/restaurant.rs:3:3
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Breakefast {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 2 |   pub toast: String,
[INFO] [stdout] 3 |   seasonal_fruit: String
[INFO] [stdout]   |   ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             x += 1;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:28:36
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let add_one_closure = |mut x| {
[INFO] [stdout]    |                                    ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut num_red = 0;
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut num_blue = 0;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> libs/rust/math/src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 39 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.24s
[INFO] running `Command { std: "docker" "inspect" "ef6d768420b25c5733622ed10820d3a8b15a35df41b746d4ea772ca98aec4488", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef6d768420b25c5733622ed10820d3a8b15a35df41b746d4ea772ca98aec4488", kill_on_drop: false }`
[INFO] [stdout] ef6d768420b25c5733622ed10820d3a8b15a35df41b746d4ea772ca98aec4488
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] adb8c823aee630ad924f9d4675de431a7cdd485eebd13808a3a39d2222857d62
[INFO] running `Command { std: "docker" "start" "-a" "adb8c823aee630ad924f9d4675de431a7cdd485eebd13808a3a39d2222857d62", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]  --> libs/rust/math/src/lib.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Rectangle {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `can_hold` is never used
[INFO] [stderr]   --> libs/rust/math/src/lib.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl Rectangle {
[INFO] [stderr]    | -------------- method in this implementation
[INFO] [stderr] 11 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `internal_adder` is never used
[INFO] [stderr]   --> libs/rust/math/src/lib.rs:34:4
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn internal_adder(a: i32, b: i32) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]   --> libs/rust/math/src/lib.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub struct Guess {
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stderr] 39 |     value: i32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `_rust_math` (lib) generated 4 warnings
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> apps/rust/smart_pointers/src/reference_cycle.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 10 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stderr]    |     ---- ^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 10 -     Cons(i32, RefCell<Rc<List>>),
[INFO] [stderr] 10 +     Cons((), RefCell<Rc<List>>),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: fields `value` and `children` are never read
[INFO] [stderr]   --> apps/rust/smart_pointers/src/reference_cycle.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | struct Node {
[INFO] [stderr]    |        ---- fields in this struct
[INFO] [stderr] 48 |     value: i32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 49 |     parent: RefCell<Weak<Node>>,
[INFO] [stderr] 50 |     children: RefCell<Vec<Rc<Node>>>,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `_rust_smart_pointers` (lib) generated 2 warnings
[INFO] [stderr] warning: field `seasonal_fruit` is never read
[INFO] [stderr]  --> apps/rust/lib/src/restaurant.rs:3:3
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Breakefast {
[INFO] [stderr]   |            ---------- field in this struct
[INFO] [stderr] 2 |   pub toast: String,
[INFO] [stderr] 3 |   seasonal_fruit: String
[INFO] [stderr]   |   ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `_rust_lib` (lib) generated 1 warning
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |             x += 1;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:28:36
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let add_one_closure = |mut x| {
[INFO] [stderr]    |                                    ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut num_red = 0;
[INFO] [stderr]    |             ----^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> apps/rust/iterators_n_closures/src/t_shirt_company.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |         let mut num_blue = 0;
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Shoe` is never constructed
[INFO] [stderr]  --> apps/rust/iterators_n_closures/src/shoes_company.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Shoe {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `shoes_in_size` is never used
[INFO] [stderr]  --> apps/rust/iterators_n_closures/src/shoes_company.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `_rust_iterators_n_closures` (lib) generated 6 warnings (run `cargo fix --lib -p _rust_iterators_n_closures` to apply 2 suggestions)
[INFO] [stderr] warning: unused import: `core::prelude::v1`
[INFO] [stderr]  --> apps/rust/iterators_n_closures/src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::prelude::v1;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> apps/rust/smart_pointers/src/main.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> apps/rust/smart_pointers/src/main.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: `_rust_iterators_n_closures` (bin "_rust_iterators_n_closures" test) generated 1 warning (run `cargo fix --bin "_rust_iterators_n_closures" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `_rust_smart_pointers` (bin "_rust_smart_pointers" test) generated 2 warnings
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]   --> libs/rust/math/src/lib.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub struct Guess {
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stderr] 39 |     value: i32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stderr]  --> apps/rust/enums/src/main.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 |     V4(u8, u8, u8, u8),
[INFO] [stderr]   |     -- ^^  ^^  ^^  ^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     fields in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]   |
[INFO] [stderr] 7 -     V4(u8, u8, u8, u8),
[INFO] [stderr] 7 +     V4((), (), (), ()),
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]  --> apps/rust/enums/src/main.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 |     V6(String),
[INFO] [stderr]   |     -- ^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]   |
[INFO] [stderr] 8 -     V6(String),
[INFO] [stderr] 8 +     V6(()),
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> apps/rust/enums/src/main.rs:14:11
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Write(String),
[INFO] [stderr]    |     ----- ^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 14 -     Write(String),
[INFO] [stderr] 14 +     Write(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stderr]   --> apps/rust/enums/src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | enum Message {
[INFO] [stderr]    |      ------- variants in this enum
[INFO] [stderr] 12 |     Quit,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 13 |     Move { x: i32, y: i32},
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 14 |     Write(String),
[INFO] [stderr] 15 |     ChangeColor(i32, i32, i32)
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `_rust_iterators_n_closures` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: `_rust_lib` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `_rust_math` (lib test) generated 1 warning
[INFO] [stderr] warning: `_rust_smart_pointers` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: `_rust_enums` (bin "_rust_enums" test) generated 4 warnings
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> apps/rust/patterns_matching/src/main.rs:90:6
[INFO] [stderr]    |
[INFO] [stderr] 90 |     };
[INFO] [stderr]    |      ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Rgb` is never constructed
[INFO] [stderr]   --> apps/rust/patterns_matching/src/main.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |     enum Color {
[INFO] [stderr]    |          ----- variant in this enum
[INFO] [stderr] 81 |         Rgb(i32, i32, i32),
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stderr]   --> apps/rust/patterns_matching/src/main.rs:86:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |     enum Message {
[INFO] [stderr]    |          ------- variants in this enum
[INFO] [stderr] 86 |         Quit,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 87 |         Move { x: i32, y: i32 },
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 88 |         Write(String),
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `y` and `z` are never read
[INFO] [stderr]    --> apps/rust/patterns_matching/src/main.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |     struct Point {
[INFO] [stderr]     |            ----- fields in this struct
[INFO] [stderr] 135 |         x: i32,
[INFO] [stderr] 136 |         y: i32,
[INFO] [stderr]     |         ^
[INFO] [stderr] 137 |         z: i32,
[INFO] [stderr]     |         ^
[INFO] [stderr] 
[INFO] [stderr] warning: `_rust_patterns_matching` (bin "_rust_patterns_matching" test) generated 4 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/_rust_concurrency-df26a93142fcada3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/_rust_concurrency-7a770c870b62eaa3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/_rust_ds-eb61fe65ebcaa883)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/_rust_enums-a2f32899e0546ec5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/_rust_errors-f65864c5ad11b62e)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/_rust_generics-80aa5ee3df661d9e)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/_rust_generics-2a8b99a7672a4d04)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/_rust_iterators_n_closures-c991207bb49ddfac)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test shoes_company::tests::filters_by_size ... ok
[INFO] [stdout] test t_shirt_company::tests::should_giveaway_more_stocked ... ok
[INFO] [stdout] test t_shirt_company::tests::should_giveaway_user_prefered ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/_rust_iterators_n_closures-fa32fdaa38632b35)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/_rust_lib-221093036ff05674)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/_rust_lib-b708edcf370ad5ae)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/_rust_math-895e8c44edd08ce5)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::greeting_contains_name ... ignored
[INFO] [stdout] test tests::it_adds_two ... ok
[INFO] [stdout] test tests::larger_can_hold_smaller ... ok
[INFO] [stdout] test tests::should_call_internal_adder ... ok
[INFO] [stdout] test tests::smaller_cannot_hold_larger ... ok
[INFO] [stdout] test tests::greater_than_100 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/_rust_minigrep-db82924e9178d1e6)
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::case_sensitive ... ok
[INFO] [stdout] test tests::case_insensitive ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::case_insensitive stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::case_insensitive' panicked at apps/rust/minigrep/src/lib.rs:83:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: ["Rust:", "Trust me."]
[INFO] [stdout]  right: ["Trust me."]
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64cfe05ce902 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64cfe05ce902 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64cfe05ce902 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64cfe05ce902 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64cfe05f4643 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64cfe05f4643 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x64cfe05cbae3 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64cfe05cbae3 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64cfe05ce752 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64cfe05cfe6c - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x64cfe05cfcc2 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x64cfe0597da4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x64cfe0597da4 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64cfe05d084b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x64cfe05d084b - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x64cfe05d061a - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x64cfe05cedf9 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x64cfe05d02ad - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x64cfe05f31c0 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x64cfe05f3427 - core::panicking::assert_failed_inner::h02e1528dd7bc6647
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:448:17
[INFO] [stdout]   20:     0x64cfe055d1f0 - core::panicking::assert_failed::hbc5b36db3a033be4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:403:5
[INFO] [stdout]   21:     0x64cfe055dcf1 - _rust_minigrep::tests::case_insensitive::he36afccde12d0b3e
[INFO] [stdout]                                at /opt/rustwide/workdir/apps/rust/minigrep/src/lib.rs:83:9
[INFO] [stdout]   22:     0x64cfe055dd69 - _rust_minigrep::tests::case_insensitive::{{closure}}::h803c2b8eb875ff93
[INFO] [stdout]                                at /opt/rustwide/workdir/apps/rust/minigrep/src/lib.rs:75:26
[INFO] [stdout]   23:     0x64cfe055dd69 - core::ops::function::FnOnce::call_once::h56810111130c1f13
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64cfe059d52b - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x64cfe059d52b - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x64cfe059c71e - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x64cfe059c71e - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x64cfe059c71e - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x64cfe059c71e - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x64cfe059c71e - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x64cfe059c71e - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x64cfe059c71e - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x64cfe0560294 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x64cfe0560294 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   35:     0x64cfe0563c6a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x64cfe0563c6a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x64cfe0563c6a - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x64cfe0563c6a - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x64cfe0563c6a - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x64cfe0563c6a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x64cfe0563c6a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x64cfe05d37a7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x64cfe05d37a7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   44:     0x64cfe05d37a7 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   45:     0x7771e1557aa4 - <unknown>
[INFO] [stdout]   46:     0x7771e15e4a34 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::case_insensitive
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p _rust_minigrep --lib`
[INFO] running `Command { std: "docker" "inspect" "adb8c823aee630ad924f9d4675de431a7cdd485eebd13808a3a39d2222857d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adb8c823aee630ad924f9d4675de431a7cdd485eebd13808a3a39d2222857d62", kill_on_drop: false }`
[INFO] [stdout] adb8c823aee630ad924f9d4675de431a7cdd485eebd13808a3a39d2222857d62
