[INFO] fetching crate buffer 0.1.9...
[INFO] checking buffer-0.1.9 against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] extracting crate buffer 0.1.9 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate buffer 0.1.9 on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buffer 0.1.9
[INFO] finished tweaking crates.io crate buffer 0.1.9
[INFO] tweaked toml for crates.io crate buffer 0.1.9 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate buffer 0.1.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a366730678d2b23df598bb19d217b112ce955792addcee896bd369d16b452b2
[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" "2a366730678d2b23df598bb19d217b112ce955792addcee896bd369d16b452b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a366730678d2b23df598bb19d217b112ce955792addcee896bd369d16b452b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a366730678d2b23df598bb19d217b112ce955792addcee896bd369d16b452b2", kill_on_drop: false }`
[INFO] [stdout] 2a366730678d2b23df598bb19d217b112ce955792addcee896bd369d16b452b2
[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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15442e4a7c8154516fd28717fc1d983dc316724d9b738412dc61ac67d0e9ca35
[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" "15442e4a7c8154516fd28717fc1d983dc316724d9b738412dc61ac67d0e9ca35", kill_on_drop: false }`
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking mac v0.0.2
[INFO] [stderr]     Checking buffer v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/traits.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let read = try!(reader.read(buf.uninitialized_mut()));
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/traits.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let read = try!(reader.read(buf.uninitialized_mut()));
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` 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 1.10s
[INFO] running `Command { std: "docker" "inspect" "15442e4a7c8154516fd28717fc1d983dc316724d9b738412dc61ac67d0e9ca35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15442e4a7c8154516fd28717fc1d983dc316724d9b738412dc61ac67d0e9ca35", kill_on_drop: false }`
[INFO] [stdout] 15442e4a7c8154516fd28717fc1d983dc316724d9b738412dc61ac67d0e9ca35