[INFO] cloning repository https://github.com/laohanlinux/util-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/laohanlinux/util-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaohanlinux%2Futil-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaohanlinux%2Futil-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a525a0e30e7eefe1d7abafa9d46b65839806254e [INFO] checking laohanlinux/util-rs against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaohanlinux%2Futil-rs" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/laohanlinux/util-rs on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/laohanlinux/util-rs [INFO] finished tweaking git repo https://github.com/laohanlinux/util-rs [INFO] tweaked toml for git repo https://github.com/laohanlinux/util-rs written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/laohanlinux/util-rs already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2008db721b849f93e535d3720c83b6d7a275df16c2413f64450802f38a1ed355 [INFO] running `Command { std: "docker" "start" "-a" "2008db721b849f93e535d3720c83b6d7a275df16c2413f64450802f38a1ed355", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2008db721b849f93e535d3720c83b6d7a275df16c2413f64450802f38a1ed355", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2008db721b849f93e535d3720c83b6d7a275df16c2413f64450802f38a1ed355", kill_on_drop: false }` [INFO] [stdout] 2008db721b849f93e535d3720c83b6d7a275df16c2413f64450802f38a1ed355 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] db1a7fc30dea799770b14a7db4a862ba58e1d75e6c45bc09d19ba489c9fdbd57 [INFO] running `Command { std: "docker" "start" "-a" "db1a7fc30dea799770b14a7db4a862ba58e1d75e6c45bc09d19ba489c9fdbd57", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking ext-fs v0.1.0 (/opt/rustwide/workdir/ext-fs) [INFO] [stdout] warning: the feature `result_map_or_else` has been stable since 1.41.0 and no longer requires an attribute to enable [INFO] [stdout] --> ext-fs/src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(result_map_or_else)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `result_map_or_else` has been stable since 1.41.0 and no longer requires an attribute to enable [INFO] [stdout] --> ext-fs/src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(result_map_or_else)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> ext-fs/src/lib.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | crate::stdfs::remove_dir_all("/tmp/a"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Checking counter v0.5.2 [INFO] [stderr] Checking snowflake v0.1.0 (/opt/rustwide/workdir/snowflake) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> snowflake/src/lib.rs:114:13 [INFO] [stdout] | [INFO] [stdout] 114 | for i in 0..num { [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> snowflake/src/lib.rs:114:13 [INFO] [stdout] | [INFO] [stdout] 114 | for i in 0..num { [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: unused variable: `i` [INFO] [stdout] --> snowflake/src/lib.rs:173:21 [INFO] [stdout] | [INFO] [stdout] 173 | for i in 0..10000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> snowflake/src/lib.rs:198:21 [INFO] [stdout] | [INFO] [stdout] 198 | for i in 0..100 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> snowflake/src/lib.rs:194:13 [INFO] [stdout] | [INFO] [stdout] 194 | for i in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> snowflake/src/lib.rs:226:13 [INFO] [stdout] | [INFO] [stdout] 226 | for i in 0..1000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> snowflake/src/lib.rs:167:13 [INFO] [stdout] | [INFO] [stdout] 167 | let mut res: Arc>> = Arc::new(Mutex::new(Vec::new())); [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] --> snowflake/src/lib.rs:171:17 [INFO] [stdout] | [INFO] [stdout] 171 | let mut work = works.get_ref(&i).unwrap().clone(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> snowflake/src/lib.rs:192:13 [INFO] [stdout] | [INFO] [stdout] 192 | let mut res: Arc>> = Arc::new(Mutex::new(Vec::new())); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> snowflake/src/lib.rs:218:13 [INFO] [stdout] | [INFO] [stdout] 218 | work.next_id(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.49s [INFO] running `Command { std: "docker" "inspect" "db1a7fc30dea799770b14a7db4a862ba58e1d75e6c45bc09d19ba489c9fdbd57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "db1a7fc30dea799770b14a7db4a862ba58e1d75e6c45bc09d19ba489c9fdbd57", kill_on_drop: false }` [INFO] [stdout] db1a7fc30dea799770b14a7db4a862ba58e1d75e6c45bc09d19ba489c9fdbd57