[INFO] cloning repository https://github.com/Guang1234567/minigrep [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Guang1234567/minigrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuang1234567%2Fminigrep", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuang1234567%2Fminigrep'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ebf1c9da65374dbf50c51521d82a50ac9a8d16d8 [INFO] checking Guang1234567/minigrep against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuang1234567%2Fminigrep" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Guang1234567/minigrep on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Guang1234567/minigrep [INFO] finished tweaking git repo https://github.com/Guang1234567/minigrep [INFO] tweaked toml for git repo https://github.com/Guang1234567/minigrep written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/Guang1234567/minigrep already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 035f42a51176785ed23eebfc6118c212d4492a6795ce64b8ac52c0820ac0ac9c [INFO] running `Command { std: "docker" "start" "-a" "035f42a51176785ed23eebfc6118c212d4492a6795ce64b8ac52c0820ac0ac9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "035f42a51176785ed23eebfc6118c212d4492a6795ce64b8ac52c0820ac0ac9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "035f42a51176785ed23eebfc6118c212d4492a6795ce64b8ac52c0820ac0ac9c", kill_on_drop: false }` [INFO] [stdout] 035f42a51176785ed23eebfc6118c212d4492a6795ce64b8ac52c0820ac0ac9c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9abcc666a7fe6caf91f6f22ea7e092d9b299be682d98bc6f877ea60a3ce6c66b [INFO] running `Command { std: "docker" "start" "-a" "9abcc666a7fe6caf91f6f22ea7e092d9b299be682d98bc6f877ea60a3ce6c66b", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] Running `cargo fix --edition` [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Checking nodrop v0.1.14 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Checking try-lock v0.2.2 [INFO] [stderr] Compiling indexmap v1.3.0 [INFO] [stderr] Checking lock_api v0.3.1 [INFO] [stderr] Checking tokio-sync v0.1.7 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking tokio-trace-core v0.1.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Checking want v0.2.0 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking http v0.1.19 [INFO] [stderr] Checking string v0.2.1 [INFO] [stderr] Checking tokio-buf v0.1.1 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking tokio-threadpool v0.1.16 [INFO] [stderr] Checking tokio-reactor v0.1.10 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio v0.1.19 [INFO] [stderr] Checking futures-executor-preview v0.3.0-alpha.17 [INFO] [stderr] Checking futures-preview v0.3.0-alpha.17 [INFO] [stderr] Checking http-body v0.1.0 [INFO] [stderr] Checking h2 v0.1.26 [INFO] [stderr] Checking minigrep v0.1.0 (/tmp/fixit) [INFO] [stderr] Migrating src/lib.rs from 2018 edition to 2021 [INFO] [stderr] Fixed src/print/mod.rs (1 fix) [INFO] [stderr] Fixed src/memory/mod.rs (2 fixes) [INFO] [stderr] Fixed src/deref/mod.rs (1 fix) [INFO] [stderr] Fixed src/server_demo/mod.rs (1 fix) [INFO] [stderr] Fixed src/rc/mod.rs (2 fixes) [INFO] [stderr] Fixed src/thread_demo/mod.rs (2 fixes) [INFO] [stderr] Fixed src/thread_pool/mod.rs (2 fixes) [INFO] [stderr] Fixed src/oop_demo/mod.rs (5 fixes) [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `io` [INFO] [stdout] --> src/print/mod.rs:87:31 [INFO] [stdout] | [INFO] [stdout] 87 | let mut some_writer = io::stdout(); [INFO] [stdout] | ^^ use of undeclared crate or module `io` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> src/print/mod.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Cacher` [INFO] [stdout] --> src/cache/mod.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct Cacher [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/cache/mod.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | fn new(calculation: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/cache/mod.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | fn value(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value2` [INFO] [stdout] --> src/cache/mod.rs:36:8 [INFO] [stdout] | [INFO] [stdout] 36 | fn value2(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value3` [INFO] [stdout] --> src/cache/mod.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn value3(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_some` [INFO] [stdout] --> src/cache/mod.rs:57:8 [INFO] [stdout] | [INFO] [stdout] 57 | fn is_some(&self) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_none` [INFO] [stdout] --> src/cache/mod.rs:64:8 [INFO] [stdout] | [INFO] [stdout] 64 | fn is_none(&self) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/iterator/mod.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | fn new() -> Counter { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/deref/mod.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | fn new(x: T) -> MyBox { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> src/memory/mod.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/memory/mod.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | Cons(T, RefCell>>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> src/memory/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> src/memory/mod.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | fn tail(&self) -> Option<&RefCell>>> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/rc/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Cons(T, &'a Box>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> src/rc/mod.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/rc/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Cons(T, Rc>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> src/rc/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/rc/mod.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | Cons(Rc>, Rc>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> src/rc/mod.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `LimitTracker` [INFO] [stdout] --> src/ref_demo/mod.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct LimitTracker<'a, T> [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/ref_demo/mod.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn new(messenger: &'a T, max: usize) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `set_value` [INFO] [stdout] --> src/ref_demo/mod.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 24 | pub fn set_value(&mut self, value: usize) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/oop_demo/mod.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/oop_demo/mod.rs:88:8 [INFO] [stdout] | [INFO] [stdout] 88 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_text` [INFO] [stdout] --> src/oop_demo/mod.rs:95:12 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn add_text(&mut self, text: &str) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `content` [INFO] [stdout] --> src/oop_demo/mod.rs:99:12 [INFO] [stdout] | [INFO] [stdout] 99 | pub fn content(&self) -> &str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `request_review` [INFO] [stdout] --> src/oop_demo/mod.rs:103:12 [INFO] [stdout] | [INFO] [stdout] 103 | pub fn request_review(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `approve` [INFO] [stdout] --> src/oop_demo/mod.rs:109:12 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn approve(&mut self) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> src/thread_pool/mod.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | id: usize, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 30 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Migrating src/main.rs from 2018 edition to 2021 [INFO] [stderr] Fixed src/main.rs (2 fixes) [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> src/print/mod.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0433`. [INFO] [stdout] [INFO] [stderr] error: could not compile `minigrep` due to 2 previous errors; 1 warning emitted [INFO] [stderr] error: failed to migrate to next edition [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101) [INFO] running `Command { std: "docker" "inspect" "9abcc666a7fe6caf91f6f22ea7e092d9b299be682d98bc6f877ea60a3ce6c66b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9abcc666a7fe6caf91f6f22ea7e092d9b299be682d98bc6f877ea60a3ce6c66b", kill_on_drop: false }` [INFO] [stdout] 9abcc666a7fe6caf91f6f22ea7e092d9b299be682d98bc6f877ea60a3ce6c66b