[INFO] cloning repository https://github.com/Monster12138/LearnRust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Monster12138/LearnRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonster12138%2FLearnRust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonster12138%2FLearnRust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a2aede3005a4c2ec64085b6f236b47335cf436ed [INFO] checking Monster12138/LearnRust against try#c0a9760914bada211f4924ee16d41ae1a366d2ba for pr-148545 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonster12138%2FLearnRust" "/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/Monster12138/LearnRust [INFO] finished tweaking git repo https://github.com/Monster12138/LearnRust [INFO] tweaked toml for git repo https://github.com/Monster12138/LearnRust written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Monster12138/LearnRust on toolchain c0a9760914bada211f4924ee16d41ae1a366d2ba [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Monster12138/LearnRust 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" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking Monster12138/LearnRust against try#c0a9760914bada211f4924ee16d41ae1a366d2ba for pr-148545 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonster12138%2FLearnRust" "/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/Monster12138/LearnRust [INFO] finished tweaking git repo https://github.com/Monster12138/LearnRust [INFO] tweaked toml for git repo https://github.com/Monster12138/LearnRust written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Monster12138/LearnRust on toolchain c0a9760914bada211f4924ee16d41ae1a366d2ba [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Monster12138/LearnRust 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" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cc v1.0.88 [INFO] [stderr] Downloaded chrono v0.4.34 [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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 890330f24497a322e5316d9a6c3ca68ca867972a75c1c629c1caab45ca2933bf [INFO] running `Command { std: "docker" "start" "-a" "890330f24497a322e5316d9a6c3ca68ca867972a75c1c629c1caab45ca2933bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "890330f24497a322e5316d9a6c3ca68ca867972a75c1c629c1caab45ca2933bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "890330f24497a322e5316d9a6c3ca68ca867972a75c1c629c1caab45ca2933bf", kill_on_drop: false }` [INFO] [stdout] 890330f24497a322e5316d9a6c3ca68ca867972a75c1c629c1caab45ca2933bf [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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0530d7d76571556e63be837888a3db1666485af9ddb6413b60c4de746c4a46bf [INFO] running `Command { std: "docker" "start" "-a" "0530d7d76571556e63be837888a3db1666485af9ddb6413b60c4de746c4a46bf", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.50 [INFO] [stderr] Compiling num-traits v0.2.16 [INFO] [stderr] Checking futures-sink v0.3.30 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking regex-automata v0.4.5 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking mio v0.8.10 [INFO] [stderr] Checking tracing-log v0.1.4 [INFO] [stderr] Checking serde_json v1.0.114 [INFO] [stderr] Checking matchers v0.0.1 [INFO] [stderr] Checking tracing-serde v0.1.3 [INFO] [stderr] Checking futures-channel v0.3.30 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking regex v1.10.3 [INFO] [stderr] Checking num-integer v0.1.45 [INFO] [stderr] Checking chrono v0.4.34 [INFO] [stderr] Checking num-complex v0.4.4 [INFO] [stderr] Checking atoi v0.3.3 [INFO] [stderr] Checking num-bigint v0.4.4 [INFO] [stderr] Checking num-iter v0.1.43 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking num-rational v0.4.1 [INFO] [stderr] Checking num v0.4.1 [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stderr] Compiling tracing-attributes v0.1.27 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Compiling pin-project-internal v1.1.4 [INFO] [stderr] Compiling async-stream-impl v0.3.5 [INFO] [stderr] Checking structopt v0.3.26 [INFO] [stderr] Checking async-stream v0.3.5 [INFO] [stderr] Checking tokio v1.36.0 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Checking pin-project v1.1.4 [INFO] [stderr] Checking tracing-futures v0.2.5 [INFO] [stderr] Checking tracing-subscriber v0.2.25 [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking futures v0.3.30 [INFO] [stderr] Checking tokio-stream v0.1.14 [INFO] [stderr] Checking mini-redis v0.4.1 [INFO] [stderr] Checking learning_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `do_something` is never used [INFO] [stdout] --> src/bin/async.rs:2:10 [INFO] [stdout] | [INFO] [stdout] 2 | async fn do_something() { [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 `hello_world` is never used [INFO] [stdout] --> src/bin/async.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | async fn hello_world() -> bool { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `hello_cat` is never used [INFO] [stdout] --> src/bin/async.rs:12:10 [INFO] [stdout] | [INFO] [stdout] 12 | async fn hello_cat() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0106]: missing lifetime specifier [INFO] [stdout] --> src/bin/dangling_references.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | fn dangle() -> &String { [INFO] [stdout] | ^ expected named lifetime parameter [INFO] [stdout] | [INFO] [stdout] = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from [INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static` [INFO] [stdout] | [INFO] [stdout] 1 | fn dangle() -> &'static String { [INFO] [stdout] | +++++++ [INFO] [stdout] help: instead, you are more likely to want to return an owned value [INFO] [stdout] | [INFO] [stdout] 1 - fn dangle() -> &String { [INFO] [stdout] 1 + fn dangle() -> String { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `do_something` is never used [INFO] [stdout] --> src/bin/async.rs:2:10 [INFO] [stdout] | [INFO] [stdout] 2 | async fn do_something() { [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 `hello_world` is never used [INFO] [stdout] --> src/bin/async.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | async fn hello_world() -> bool { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `hello_cat` is never used [INFO] [stdout] --> src/bin/async.rs:12:10 [INFO] [stdout] | [INFO] [stdout] 12 | async fn hello_cat() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0106`. [INFO] [stdout] [INFO] [stdout] warning: unused import: `num::one` [INFO] [stdout] --> src/bin/mini_redis.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use num::one; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `width` and `height` are never read [INFO] [stdout] --> src/bin/debug.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct Rectangle { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 3 | width: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `learning_rust` (bin "dangling_references") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: field `2` is never read [INFO] [stdout] --> src/bin/match.rs:4:28 [INFO] [stdout] | [INFO] [stdout] 4 | ChangeColorRGB(u16,u16,u16), [INFO] [stdout] | -------------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 4 - ChangeColorRGB(u16,u16,u16), [INFO] [stdout] 4 + ChangeColorRGB(u16,u16,()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `width` and `height` are never read [INFO] [stdout] --> src/bin/debug.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct Rectangle { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 3 | width: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `2` is never read [INFO] [stdout] --> src/bin/match.rs:4:28 [INFO] [stdout] | [INFO] [stdout] 4 | ChangeColorRGB(u16,u16,u16), [INFO] [stdout] | -------------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 4 - ChangeColorRGB(u16,u16,u16), [INFO] [stdout] 4 + ChangeColorRGB(u16,u16,()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "0530d7d76571556e63be837888a3db1666485af9ddb6413b60c4de746c4a46bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0530d7d76571556e63be837888a3db1666485af9ddb6413b60c4de746c4a46bf", kill_on_drop: false }` [INFO] [stdout] 0530d7d76571556e63be837888a3db1666485af9ddb6413b60c4de746c4a46bf