[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 master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaohanlinux%2Futil-rs" "/workspace/builds/worker-11/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/laohanlinux/util-rs on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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-11/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" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 8e4a4993fc15986f14186e33af0b4d18befce4bf5afcfe874ad5d32841f736f8 [INFO] running `Command { std: "docker" "start" "-a" "8e4a4993fc15986f14186e33af0b4d18befce4bf5afcfe874ad5d32841f736f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8e4a4993fc15986f14186e33af0b4d18befce4bf5afcfe874ad5d32841f736f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e4a4993fc15986f14186e33af0b4d18befce4bf5afcfe874ad5d32841f736f8", kill_on_drop: false }` [INFO] [stdout] 8e4a4993fc15986f14186e33af0b4d18befce4bf5afcfe874ad5d32841f736f8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] d532f546872b346724f76899fe86f0478f00bd9f8256c747f811f6217f30aa7d [INFO] running `Command { std: "docker" "start" "-a" "d532f546872b346724f76899fe86f0478f00bd9f8256c747f811f6217f30aa7d", kill_on_drop: false }` [INFO] [stderr] Checking ext-fs v0.1.0 (/opt/rustwide/workdir/ext-fs) [INFO] [stderr] Compiling num-traits v0.2.14 [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 `std::result::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] 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: 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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::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 4.00s [INFO] running `Command { std: "docker" "inspect" "d532f546872b346724f76899fe86f0478f00bd9f8256c747f811f6217f30aa7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d532f546872b346724f76899fe86f0478f00bd9f8256c747f811f6217f30aa7d", kill_on_drop: false }` [INFO] [stdout] d532f546872b346724f76899fe86f0478f00bd9f8256c747f811f6217f30aa7d