[INFO] fetching crate seqlock 0.1.1...
[INFO] checking seqlock-0.1.1 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate seqlock 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate seqlock 0.1.1 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate seqlock 0.1.1
[INFO] finished tweaking crates.io crate seqlock 0.1.1
[INFO] tweaked toml for crates.io crate seqlock 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 003c72889b98a66a72c5dfcfce56e2c93983e5260407d1d28569aaddeeee8dda
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "003c72889b98a66a72c5dfcfce56e2c93983e5260407d1d28569aaddeeee8dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "003c72889b98a66a72c5dfcfce56e2c93983e5260407d1d28569aaddeeee8dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "003c72889b98a66a72c5dfcfce56e2c93983e5260407d1d28569aaddeeee8dda", kill_on_drop: false }`
[INFO] [stdout] 003c72889b98a66a72c5dfcfce56e2c93983e5260407d1d28569aaddeeee8dda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] af6b0d7f4f3dff19eac7aaab1ca4d8428881cfe943716c9195b975dba978dfd9
[INFO] running `Command { std: "docker" "start" "-a" "af6b0d7f4f3dff19eac7aaab1ca4d8428881cfe943716c9195b975dba978dfd9", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v0.1.8
[INFO] [stderr]     Checking parking_lot v0.2.8
[INFO] [stderr]     Checking seqlock v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |         unsafe { self.data.into_inner() }
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |         unsafe { self.data.into_inner() }
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "af6b0d7f4f3dff19eac7aaab1ca4d8428881cfe943716c9195b975dba978dfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af6b0d7f4f3dff19eac7aaab1ca4d8428881cfe943716c9195b975dba978dfd9", kill_on_drop: false }`
[INFO] [stdout] af6b0d7f4f3dff19eac7aaab1ca4d8428881cfe943716c9195b975dba978dfd9
