[INFO] cloning repository https://github.com/dipaktapase/rust_tutorials
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dipaktapase/rust_tutorials" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdipaktapase%2Frust_tutorials", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdipaktapase%2Frust_tutorials'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4793ead2663a83c9073cbd7f0ffa6da7eec2dfeb
[INFO] checking dipaktapase/rust_tutorials against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdipaktapase%2Frust_tutorials" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dipaktapase/rust_tutorials
[INFO] finished tweaking git repo https://github.com/dipaktapase/rust_tutorials
[INFO] tweaked toml for git repo https://github.com/dipaktapase/rust_tutorials written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dipaktapase/rust_tutorials on toolchain 54cf65b8d066c082e536455049b95943cf30378f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dipaktapase/rust_tutorials 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" "+54cf65b8d066c082e536455049b95943cf30378f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d391a2051bfdf61e8f2e3950ea65efed015460b0e4bb217cfa3c6ba313d8e23
[INFO] running `Command { std: "docker" "start" "-a" "6d391a2051bfdf61e8f2e3950ea65efed015460b0e4bb217cfa3c6ba313d8e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d391a2051bfdf61e8f2e3950ea65efed015460b0e4bb217cfa3c6ba313d8e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d391a2051bfdf61e8f2e3950ea65efed015460b0e4bb217cfa3c6ba313d8e23", kill_on_drop: false }`
[INFO] [stdout] 6d391a2051bfdf61e8f2e3950ea65efed015460b0e4bb217cfa3c6ba313d8e23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9386b8ca66ff03870ed20d38e9236a2ae7c8d775861ac4278a2d6928eea07742
[INFO] running `Command { std: "docker" "start" "-a" "9386b8ca66ff03870ed20d38e9236a2ae7c8d775861ac4278a2d6928eea07742", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_ZTM v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Corporate` is never constructed
[INFO] [stdout]   --> src/bin/a40.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Corporate;
[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 `StoreFront` is never constructed
[INFO] [stdout]   --> src/bin/a40.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct StoreFront;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Admin`, `Manager`, and `User` are never constructed
[INFO] [stdout]  --> src/bin/23_Expressions_demo.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Access {
[INFO] [stdout]   |      ------ variants in this enum
[INFO] [stdout] 2 |     Admin,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     Manager,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     User,
[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: `data`
[INFO] [stdout]   --> src/bin/a24.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let data = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Brown` is never constructed
[INFO] [stdout]   --> src/bin/30_impl_activity.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 14 |     Brown,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Admin`, `Manager`, and `User` are never constructed
[INFO] [stdout]  --> src/bin/23_Expressions_demo.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Access {
[INFO] [stdout]   |      ------ variants in this enum
[INFO] [stdout] 2 |     Admin,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     Manager,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     User,
[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 `Corporate` is never constructed
[INFO] [stdout]   --> src/bin/a40.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Corporate;
[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 `StoreFront` is never constructed
[INFO] [stdout]   --> src/bin/a40.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct StoreFront;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clamp` is never used
[INFO] [stdout]   --> src/bin/a22.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn clamp(n: i32, lower: i32, upper: 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 `div` is never used
[INFO] [stdout]   --> src/bin/a22.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn div(a: i32, b: i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concat` is never used
[INFO] [stdout]   --> src/bin/a22.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn concat(first: &str, second: &str) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Brown` is never constructed
[INFO] [stdout]   --> src/bin/30_impl_activity.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 14 |     Brown,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `longest` in this scope
[INFO] [stdout]   --> src/bin/a33.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |     println!("{}", longest(short, long))
[INFO] [stdout]    |                    ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_ZTM` (bin "a33") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]   --> src/bin/a28.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Color {
[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: `paid`
[INFO] [stdout]   --> src/bin/22_Expressions.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let paid = true;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_paid`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order_placed`
[INFO] [stdout]   --> src/bin/22_Expressions.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let order_placed = match item {
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_order_placed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Burger` and `Fries` are never constructed
[INFO] [stdout]  --> src/bin/22_Expressions.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Menu {
[INFO] [stdout]   |      ---- variants in this enum
[INFO] [stdout] 7 |     Burger,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Fries,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TreasureItem` is never used
[INFO] [stdout]   --> src/bin/a35.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | enum TreasureItem {
[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 `TreasureChest` is never constructed
[INFO] [stdout]   --> src/bin/a35.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct TreasureChest {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pressure` is never constructed
[INFO] [stdout]   --> src/bin/a35.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Pressure(u16);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BrickStyle` is never used
[INFO] [stdout]   --> src/bin/a35.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | enum BrickStyle {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Tile` is never used
[INFO] [stdout]   --> src/bin/a35.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 | enum Tile {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ServicePriority` is never used
[INFO] [stdout]   --> src/bin/a29.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum ServicePriority {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Priority` is never used
[INFO] [stdout]   --> src/bin/a29.rs:18:7
[INFO] [stdout]    |
[INFO] [stdout] 18 | trait Priority {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantGuest` is never constructed
[INFO] [stdout]   --> src/bin/a29.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct ImportantGuest;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Guest` is never constructed
[INFO] [stdout]   --> src/bin/a29.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Guest;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TreasureItem` is never used
[INFO] [stdout]   --> src/bin/a35.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | enum TreasureItem {
[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 `TreasureChest` is never constructed
[INFO] [stdout]   --> src/bin/a35.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct TreasureChest {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pressure` is never constructed
[INFO] [stdout]   --> src/bin/a35.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Pressure(u16);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BrickStyle` is never used
[INFO] [stdout]   --> src/bin/a35.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | enum BrickStyle {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Tile` is never used
[INFO] [stdout]   --> src/bin/a35.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 | enum Tile {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Up`, `Down`, and `Right` are never constructed
[INFO] [stdout]   --> src/bin/14_enums.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | enum Direction {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout]  7 |     Up, 
[INFO] [stdout]    |     ^^
[INFO] [stdout]  8 |     Down,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]  9 |     Left,
[INFO] [stdout] 10 |     Right,
[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 `msg_hello` is never used
[INFO] [stdout]   --> src/bin/a38.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn msg_hello() -> &'static str {
[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 `msg_thread` is never used
[INFO] [stdout]   --> src/bin/a38.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn msg_thread() -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `msg_excited` is never used
[INFO] [stdout]   --> src/bin/a38.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn msg_excited() -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9386b8ca66ff03870ed20d38e9236a2ae7c8d775861ac4278a2d6928eea07742", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9386b8ca66ff03870ed20d38e9236a2ae7c8d775861ac4278a2d6928eea07742", kill_on_drop: false }`
[INFO] [stdout] 9386b8ca66ff03870ed20d38e9236a2ae7c8d775861ac4278a2d6928eea07742