[INFO] cloning repository https://github.com/khrynczenko/crust-of-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/khrynczenko/crust-of-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhrynczenko%2Fcrust-of-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhrynczenko%2Fcrust-of-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89c56d591793119e8adbccbfc1e6022d2c3b468e
[INFO] checking khrynczenko/crust-of-rust against master#068609ce766e55d2e7371cd2a86143a6d7e8e2e4 for pr-138952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhrynczenko%2Fcrust-of-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/khrynczenko/crust-of-rust on toolchain 068609ce766e55d2e7371cd2a86143a6d7e8e2e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/khrynczenko/crust-of-rust
[INFO] finished tweaking git repo https://github.com/khrynczenko/crust-of-rust
[INFO] tweaked toml for git repo https://github.com/khrynczenko/crust-of-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/khrynczenko/crust-of-rust 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" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b04eeeac487c6e1bd0d6f92c61731b41c9dac7870b179b56843f55207f7656b
[INFO] running `Command { std: "docker" "start" "-a" "1b04eeeac487c6e1bd0d6f92c61731b41c9dac7870b179b56843f55207f7656b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b04eeeac487c6e1bd0d6f92c61731b41c9dac7870b179b56843f55207f7656b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b04eeeac487c6e1bd0d6f92c61731b41c9dac7870b179b56843f55207f7656b", kill_on_drop: false }`
[INFO] [stdout] 1b04eeeac487c6e1bd0d6f92c61731b41c9dac7870b179b56843f55207f7656b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f34dbfc7278f5f18366f34c562b60178a2d05d9c644f7cd8560b62c36de249d9
[INFO] running `Command { std: "docker" "start" "-a" "f34dbfc7278f5f18366f34c562b60178a2d05d9c644f7cd8560b62c36de249d9", kill_on_drop: false }`
[INFO] [stderr]     Checking strsplit v0.1.0 (/opt/rustwide/workdir/strsplit)
[INFO] [stderr]     Checking panama v0.1.0 (/opt/rustwide/workdir/panama)
[INFO] [stderr]     Checking vecmac v0.1.0 (/opt/rustwide/workdir/vecmac)
[INFO] [stderr]     Checking iterators v0.1.0 (/opt/rustwide/workdir/iterators)
[INFO] [stderr]     Checking pointers v0.1.0 (/opt/rustwide/workdir/pointers)
[INFO] [stderr]     Checking atomics v0.1.0 (/opt/rustwide/workdir/atomics)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> pointers/src/rc.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 47 -             drop(inner);
[INFO] [stdout] 47 +             let _ = inner;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> pointers/src/rc.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 47 -             drop(inner);
[INFO] [stdout] 47 +             let _ = inner;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "f34dbfc7278f5f18366f34c562b60178a2d05d9c644f7cd8560b62c36de249d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f34dbfc7278f5f18366f34c562b60178a2d05d9c644f7cd8560b62c36de249d9", kill_on_drop: false }`
[INFO] [stdout] f34dbfc7278f5f18366f34c562b60178a2d05d9c644f7cd8560b62c36de249d9