[INFO] fetching crate plex 0.2.5...
[INFO] testing plex-0.2.5 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate plex 0.2.5 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate plex 0.2.5 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate plex 0.2.5
[INFO] finished tweaking crates.io crate plex 0.2.5
[INFO] tweaked toml for crates.io crate plex 0.2.5 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd80a17a88e1744de7f4cfe919d8d010dce5fa2dfd31793a56d3c7ab05b1bf07
[INFO] running `Command { std: "docker" "start" "-a" "fd80a17a88e1744de7f4cfe919d8d010dce5fa2dfd31793a56d3c7ab05b1bf07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd80a17a88e1744de7f4cfe919d8d010dce5fa2dfd31793a56d3c7ab05b1bf07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd80a17a88e1744de7f4cfe919d8d010dce5fa2dfd31793a56d3c7ab05b1bf07", kill_on_drop: false }`
[INFO] [stdout] fd80a17a88e1744de7f4cfe919d8d010dce5fa2dfd31793a56d3c7ab05b1bf07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82f5471d55fe37286c0cdf6d95f021fc52eaf5d575645408ac4e36b3b6992eaf
[INFO] running `Command { std: "docker" "start" "-a" "82f5471d55fe37286c0cdf6d95f021fc52eaf5d575645408ac4e36b3b6992eaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling lalr v0.0.2
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling redfa v0.0.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling plex v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.09s
[INFO] running `Command { std: "docker" "inspect" "82f5471d55fe37286c0cdf6d95f021fc52eaf5d575645408ac4e36b3b6992eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82f5471d55fe37286c0cdf6d95f021fc52eaf5d575645408ac4e36b3b6992eaf", kill_on_drop: false }`
[INFO] [stdout] 82f5471d55fe37286c0cdf6d95f021fc52eaf5d575645408ac4e36b3b6992eaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 967b1eab6fbcdfa8a300fde75ddc2506fd11cddef8da99d846ebd10483667872
[INFO] running `Command { std: "docker" "start" "-a" "967b1eab6fbcdfa8a300fde75ddc2506fd11cddef8da99d846ebd10483667872", kill_on_drop: false }`
[INFO] [stderr]    Compiling plex v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> examples/demo.rs:173:13
[INFO] [stdout]     |
[INFO] [stdout] 173 |             Ident(var) Equals assign[rhs] => Expr {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> examples/demo.rs:206:13
[INFO] [stdout]     |
[INFO] [stdout] 206 |             Ident(i) => Expr {
[INFO] [stdout]     |             ^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> examples/demo.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |             Integer(i) => Expr {
[INFO] [stdout]     |             ^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "967b1eab6fbcdfa8a300fde75ddc2506fd11cddef8da99d846ebd10483667872", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "967b1eab6fbcdfa8a300fde75ddc2506fd11cddef8da99d846ebd10483667872", kill_on_drop: false }`
[INFO] [stdout] 967b1eab6fbcdfa8a300fde75ddc2506fd11cddef8da99d846ebd10483667872
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 99d5a505ba720777d6cfa967bc19a5c2cc7f1ee8e646c50c5c5310463b4b16b6
[INFO] running `Command { std: "docker" "start" "-a" "99d5a505ba720777d6cfa967bc19a5c2cc7f1ee8e646c50c5c5310463b4b16b6", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> examples/demo.rs:173:13
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 173 |             Ident(var) Equals assign[rhs] => Expr {
[INFO] [stdout] 
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> examples/demo.rs:206:13
[INFO] [stderr]     |
[INFO] [stderr] 206 |             Ident(i) => Expr {
[INFO] [stderr]     |             ^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> examples/demo.rs:210:13
[INFO] [stderr]     |
[INFO] [stderr] 210 |             Integer(i) => Expr {
[INFO] [stderr]     |             ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: `plex` (example "demo") generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/plex-b2606569d82e61a8)
[INFO] [stderr]    Doc-tests plex
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "99d5a505ba720777d6cfa967bc19a5c2cc7f1ee8e646c50c5c5310463b4b16b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99d5a505ba720777d6cfa967bc19a5c2cc7f1ee8e646c50c5c5310463b4b16b6", kill_on_drop: false }`
[INFO] [stdout] 99d5a505ba720777d6cfa967bc19a5c2cc7f1ee8e646c50c5c5310463b4b16b6