[INFO] cloning repository https://github.com/mh-alahdadian/rust-learn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mh-alahdadian/rust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmh-alahdadian%2Frust-learn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmh-alahdadian%2Frust-learn'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5358a56d34c6143fe534467e5122dfc18035ff93 [INFO] checking mh-alahdadian/rust-learn against master#0d56e340472882fa673d4b98d0802b9a799879d0 for pr-101692 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmh-alahdadian%2Frust-learn" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mh-alahdadian/rust-learn on toolchain 0d56e340472882fa673d4b98d0802b9a799879d0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mh-alahdadian/rust-learn [INFO] finished tweaking git repo https://github.com/mh-alahdadian/rust-learn [INFO] tweaked toml for git repo https://github.com/mh-alahdadian/rust-learn written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/mh-alahdadian/rust-learn already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 994de3984fbc78122dd243f6aae6b7e239c07f8fef838b39016fbd5e7a38e13c [INFO] running `Command { std: "docker" "start" "-a" "994de3984fbc78122dd243f6aae6b7e239c07f8fef838b39016fbd5e7a38e13c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "994de3984fbc78122dd243f6aae6b7e239c07f8fef838b39016fbd5e7a38e13c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "994de3984fbc78122dd243f6aae6b7e239c07f8fef838b39016fbd5e7a38e13c", kill_on_drop: false }` [INFO] [stdout] 994de3984fbc78122dd243f6aae6b7e239c07f8fef838b39016fbd5e7a38e13c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 551fae0b4eef7c2a62b103a9719a282dc649872f3c72d28b2b7afc1439096812 [INFO] running `Command { std: "docker" "start" "-a" "551fae0b4eef7c2a62b103a9719a282dc649872f3c72d28b2b7afc1439096812", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling libc v0.2.119 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling version_check v0.9.4 [INFO] [stderr] Checking futures-io v0.3.21 [INFO] [stderr] Checking pin-project-lite v0.2.8 [INFO] [stderr] Checking slab v0.4.5 [INFO] [stderr] Checking cache-padded v1.2.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Checking event-listener v2.5.2 [INFO] [stderr] Checking fastrand v1.7.0 [INFO] [stderr] Checking parking v2.0.0 [INFO] [stderr] Checking waker-fn v1.1.0 [INFO] [stderr] Compiling futures-task v0.3.21 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Checking once_cell v1.9.0 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking futures-sink v0.3.21 [INFO] [stderr] Checking async-task v4.1.0 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Compiling cc v1.0.73 [INFO] [stderr] Checking adler v1.0.2 [INFO] [stderr] Checking atomic-waker v1.0.0 [INFO] [stderr] Checking gimli v0.26.1 [INFO] [stderr] Compiling crossbeam-utils v0.8.7 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking rustc-demangle v0.1.21 [INFO] [stderr] Checking ppv-lite86 v0.2.16 [INFO] [stderr] Checking concurrent-queue v1.2.2 [INFO] [stderr] Checking async-mutex v1.4.0 [INFO] [stderr] Checking async-lock v2.5.0 [INFO] [stderr] Compiling value-bag v1.0.0-alpha.8 [INFO] [stderr] Compiling error-chain v0.12.4 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Checking async-channel v1.6.1 [INFO] [stderr] Checking futures-lite v1.12.0 [INFO] [stderr] Checking object v0.27.1 [INFO] [stderr] Compiling quote v1.0.15 [INFO] [stderr] Checking socket2 v0.4.4 [INFO] [stderr] Checking getrandom v0.2.5 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Compiling backtrace v0.3.64 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking blocking v1.1.0 [INFO] [stderr] Checking async-executor v1.4.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking addr2line v0.17.0 [INFO] [stderr] Compiling ctor v0.1.21 [INFO] [stderr] Compiling futures-macro v0.3.21 [INFO] [stderr] Compiling async-attributes v1.1.2 [INFO] [stderr] Checking polling v2.2.0 [INFO] [stderr] Checking kv-log-macro v1.0.7 [INFO] [stderr] Checking async-io v1.6.0 [INFO] [stderr] Checking async-global-executor v2.0.3 [INFO] [stderr] Checking async-std v1.10.0 [INFO] [stderr] Checking futures-executor v0.3.21 [INFO] [stderr] Checking futures v0.3.21 [INFO] [stderr] Checking learn-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: identifier contains uncommon Unicode codepoints [INFO] [stdout] --> tests/post.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | ـ => "", [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(uncommon_codepoints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ـ` [INFO] [stdout] --> tests/post.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | ـ => "", [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_ـ` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `A` is never constructed [INFO] [stdout] --> tests/impls.rs:23:12 [INFO] [stdout] | [INFO] [stdout] 23 | struct A {} [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: module `Page1` should have a snake case name [INFO] [stdout] --> tests/impls.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | mod Page1 { [INFO] [stdout] | ^^^^^ help: convert the identifier to snake case: `page1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: module `Page2` should have a snake case name [INFO] [stdout] --> tests/impls.rs:48:5 [INFO] [stdout] | [INFO] [stdout] 48 | mod Page2 { [INFO] [stdout] | ^^^^^ help: convert the identifier to snake case: `page2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> tests/var_refs.rs:35:14 [INFO] [stdout] | [INFO] [stdout] 35 | for (i, &item) in bytes.iter().enumerate() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `s` is never read [INFO] [stdout] --> tests/var_refs.rs:66:9 [INFO] [stdout] | [INFO] [stdout] 66 | s = &mut String::from("world2"); [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> tests/var_refs.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let x = 5; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> tests/var_refs.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 123 | let x: &str = &**m; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> tests/var_refs.rs:124:9 [INFO] [stdout] | [INFO] [stdout] 124 | let x: &str = &*m; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `first_word2` is never used [INFO] [stdout] --> tests/var_refs.rs:42:8 [INFO] [stdout] | [INFO] [stdout] 42 | fn first_word2<'a, 'b>(s: &'a String) -> &'a str { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 23.99s [INFO] running `Command { std: "docker" "inspect" "551fae0b4eef7c2a62b103a9719a282dc649872f3c72d28b2b7afc1439096812", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "551fae0b4eef7c2a62b103a9719a282dc649872f3c72d28b2b7afc1439096812", kill_on_drop: false }` [INFO] [stdout] 551fae0b4eef7c2a62b103a9719a282dc649872f3c72d28b2b7afc1439096812