[INFO] cloning repository https://github.com/NobodyInteractive/TypeDrivenAPIDesignInRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NobodyInteractive/TypeDrivenAPIDesignInRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNobodyInteractive%2FTypeDrivenAPIDesignInRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNobodyInteractive%2FTypeDrivenAPIDesignInRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b3dc4be3c9a007cf89e71bbbddb797593be02d2
[INFO] checking NobodyInteractive/TypeDrivenAPIDesignInRust against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNobodyInteractive%2FTypeDrivenAPIDesignInRust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NobodyInteractive/TypeDrivenAPIDesignInRust on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NobodyInteractive/TypeDrivenAPIDesignInRust
[INFO] finished tweaking git repo https://github.com/NobodyInteractive/TypeDrivenAPIDesignInRust
[INFO] tweaked toml for git repo https://github.com/NobodyInteractive/TypeDrivenAPIDesignInRust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/NobodyInteractive/TypeDrivenAPIDesignInRust 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" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b959040658c48abd022bd49c7963542184179375b40916ff90b51ea65574e1f
[INFO] running `Command { std: "docker" "start" "-a" "4b959040658c48abd022bd49c7963542184179375b40916ff90b51ea65574e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b959040658c48abd022bd49c7963542184179375b40916ff90b51ea65574e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b959040658c48abd022bd49c7963542184179375b40916ff90b51ea65574e1f", kill_on_drop: false }`
[INFO] [stdout] 4b959040658c48abd022bd49c7963542184179375b40916ff90b51ea65574e1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ebaeaca1b0e685a643e5dd38dc5b31cdd1a70e67e83ebda67f53cfa4c0eef60
[INFO] running `Command { std: "docker" "start" "-a" "5ebaeaca1b0e685a643e5dd38dc5b31cdd1a70e67e83ebda67f53cfa4c0eef60", kill_on_drop: false }`
[INFO] [stderr]     Checking type-driven-design-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/v8.rs:45:23
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn with_bound(mut self) -> Progress<Iter, Bounded> {
[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]   --> src/v8.rs:45:23
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn with_bound(mut self) -> Progress<Iter, Bounded> {
[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: constant `CLEAR` is never used
[INFO] [stdout]  --> src/v1.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const CLEAR: &str = "\x1B[2L\x1B[1;1H";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `progress` is never used
[INFO] [stdout]  --> src/v1.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn progress(v: Vec<i32>) {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expensive_calculation` is never used
[INFO] [stdout]   --> src/v1.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn expensive_calculation(_n: &i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `v1_main` is never used
[INFO] [stdout]   --> src/v1.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn v1_main() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLEAR` is never used
[INFO] [stdout]  --> src/v2.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const CLEAR: &str = "\x1B[2L\x1B[1;1H";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `progress` is never used
[INFO] [stdout]   --> src/v2.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn progress<T>(v: Vec<T>, f: fn(&T) -> ()) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expensive_calculation` is never used
[INFO] [stdout]   --> src/v2.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn expensive_calculation(_n: &i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `v2_main` is never used
[INFO] [stdout]   --> src/v2.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn v2_main() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLEAR` is never used
[INFO] [stdout]  --> src/v3.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const CLEAR: &str = "\x1B[2L\x1B[1;1H";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `progress` is never used
[INFO] [stdout]   --> src/v3.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn progress<Iter>(iter: Iter, f: fn(Iter::Item) -> ()) 
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expensive_calculation` is never used
[INFO] [stdout]   --> src/v3.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn expensive_calculation(_n: &i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `v3_main` is never used
[INFO] [stdout]   --> src/v3.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn v3_main() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLEAR` is never used
[INFO] [stdout]  --> src/v4.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const CLEAR: &str = "\x1B[2L\x1B[1;1H";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Progress` is never constructed
[INFO] [stdout]  --> src/v4.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Progress<Iter> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/v4.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<Iter> Progress<Iter> {
[INFO] [stdout]    | ------------------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new(iter: Iter) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expensive_calculation` is never used
[INFO] [stdout]   --> src/v4.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn expensive_calculation(_n: &i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `v4_main` is never used
[INFO] [stdout]   --> src/v4.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn v4_main() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLEAR` is never used
[INFO] [stdout]  --> src/v5.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const CLEAR: &str = "\x1B[2L\x1B[1;1H";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Progress` is never constructed
[INFO] [stdout]  --> src/v5.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Progress<Iter> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/v5.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<Iter> Progress<Iter> {
[INFO] [stdout]    | ------------------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new(iter: Iter) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ProgressIteratorExt` is never used
[INFO] [stdout]   --> src/v5.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | trait ProgressIteratorExt: Sized {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expensive_calculation` is never used
[INFO] [stdout]   --> src/v5.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn expensive_calculation(_n: &i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `v5_main` is never used
[INFO] [stdout]   --> src/v5.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn v5_main() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLEAR` is never used
[INFO] [stdout]  --> src/v6.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const CLEAR: &str = "\x1B[2L\x1B[1;1H";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Progress` is never constructed
[INFO] [stdout]  --> src/v6.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Progress<Iter> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/v6.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Iter> Progress<Iter> {
[INFO] [stdout]    | ------------------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new(iter: Iter) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_bound` is never used
[INFO] [stdout]   --> src/v6.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | / impl<Iter> Progress<Iter> 
[INFO] [stdout] 17 | | where Iter: ExactSizeIterator {
[INFO] [stdout]    | |_____________________________- method in this implementation
[INFO] [stdout] 18 |       pub fn with_bound(mut self) -> Self {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ProgressIteratorExt` is never used
[INFO] [stdout]   --> src/v6.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | trait ProgressIteratorExt: Sized {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expensive_calculation` is never used
[INFO] [stdout]   --> src/v6.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn expensive_calculation(_n: &i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `v6_main` is never used
[INFO] [stdout]   --> src/v6.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn v6_main() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLEAR` is never used
[INFO] [stdout]  --> src/v7.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const CLEAR: &str = "\x1B[2L\x1B[1;1H";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Progress` is never constructed
[INFO] [stdout]  --> src/v7.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Progress<Iter> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/v7.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<Iter> Progress<Iter> {
[INFO] [stdout]    | ------------------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(iter: Iter) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_bound` is never used
[INFO] [stdout]   --> src/v7.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | / impl<Iter> Progress<Iter> 
[INFO] [stdout] 18 | | where Iter: ExactSizeIterator {
[INFO] [stdout]    | |_____________________________- method in this implementation
[INFO] [stdout] 19 |       pub fn with_bound(mut self) -> Self {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_delims` is never used
[INFO] [stdout]   --> src/v7.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl<Iter> Progress<Iter> {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] 26 |     pub fn with_delims(mut self, delims: (char, char)) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ProgressIteratorExt` is never used
[INFO] [stdout]   --> src/v7.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | trait ProgressIteratorExt: Sized {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expensive_calculation` is never used
[INFO] [stdout]   --> src/v7.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn expensive_calculation(_n: &i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `v7_main` is never used
[INFO] [stdout]   --> src/v7.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn v7_main() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "5ebaeaca1b0e685a643e5dd38dc5b31cdd1a70e67e83ebda67f53cfa4c0eef60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ebaeaca1b0e685a643e5dd38dc5b31cdd1a70e67e83ebda67f53cfa4c0eef60", kill_on_drop: false }`
[INFO] [stdout] 5ebaeaca1b0e685a643e5dd38dc5b31cdd1a70e67e83ebda67f53cfa4c0eef60