[INFO] fetching crate sm-ext 0.3.0...
[INFO] checking sm-ext-0.3.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate sm-ext 0.3.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate sm-ext 0.3.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sm-ext 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate sm-ext 0.3.0
[INFO] tweaked toml for crates.io crate sm-ext 0.3.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate sm-ext 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sm-ext-derive v0.3.0
[INFO] [stderr]   Downloaded async-task v1.2.1
[INFO] [stderr]   Downloaded c_str_macro v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9581064eafeae06eaa29a144c8c3315bfaa9d4236c15b8d7d3dbf56aa0958f66
[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" "9581064eafeae06eaa29a144c8c3315bfaa9d4236c15b8d7d3dbf56aa0958f66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9581064eafeae06eaa29a144c8c3315bfaa9d4236c15b8d7d3dbf56aa0958f66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9581064eafeae06eaa29a144c8c3315bfaa9d4236c15b8d7d3dbf56aa0958f66", kill_on_drop: false }`
[INFO] [stdout] 9581064eafeae06eaa29a144c8c3315bfaa9d4236c15b8d7d3dbf56aa0958f66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38584fcc123b7f99a2f0fef9d62762b8ab8be643fc33d22e592f1f3b95aa46d3
[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" "38584fcc123b7f99a2f0fef9d62762b8ab8be643fc33d22e592f1f3b95aa46d3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking pin-project-lite v0.1.2
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]     Checking c_str_macro v1.0.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking async-task v1.2.1
[INFO] [stderr]     Checking crossbeam-utils v0.7.0
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking async-std v1.4.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling sm-ext-derive v0.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking sm-ext v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:912:12
[INFO] [stdout]     |
[INFO] [stdout] 912 |     Cell = (1 << 1),
[INFO] [stdout]     |            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:914:13
[INFO] [stdout]     |
[INFO] [stdout] 914 |     Float = (2 << 1),
[INFO] [stdout]     |             ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:920:15
[INFO] [stdout]     |
[INFO] [stdout] 920 |     VarArgs = (5 << 1),
[INFO] [stdout]     |               ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:912:12
[INFO] [stdout]     |
[INFO] [stdout] 912 |     Cell = (1 << 1),
[INFO] [stdout]     |            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:914:13
[INFO] [stdout]     |
[INFO] [stdout] 914 |     Float = (2 << 1),
[INFO] [stdout]     |             ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:920:15
[INFO] [stdout]     |
[INFO] [stdout] 920 |     VarArgs = (5 << 1),
[INFO] [stdout]     |               ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.53s
[INFO] running `Command { std: "docker" "inspect" "38584fcc123b7f99a2f0fef9d62762b8ab8be643fc33d22e592f1f3b95aa46d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38584fcc123b7f99a2f0fef9d62762b8ab8be643fc33d22e592f1f3b95aa46d3", kill_on_drop: false }`
[INFO] [stdout] 38584fcc123b7f99a2f0fef9d62762b8ab8be643fc33d22e592f1f3b95aa46d3