[INFO] fetching crate serde-redis 0.14.0...
[INFO] checking serde-redis-0.14.0 against try#88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c for pr-154887
[INFO] extracting crate serde-redis 0.14.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate serde-redis 0.14.0
[INFO] finished tweaking crates.io crate serde-redis 0.14.0
[INFO] tweaked toml for crates.io crate serde-redis 0.14.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde-redis 0.14.0 on toolchain 88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 48 packages to latest compatible versions
[INFO] [stderr]       Adding redis v0.24.0 (available: v1.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0314c12bbdc24510657f977d3203b0a4e8185eb948c90e1a9fd32449c65d177e
[INFO] running `Command { std: "docker" "start" "-a" "0314c12bbdc24510657f977d3203b0a4e8185eb948c90e1a9fd32449c65d177e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0314c12bbdc24510657f977d3203b0a4e8185eb948c90e1a9fd32449c65d177e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0314c12bbdc24510657f977d3203b0a4e8185eb948c90e1a9fd32449c65d177e", kill_on_drop: false }`
[INFO] [stdout] 0314c12bbdc24510657f977d3203b0a4e8185eb948c90e1a9fd32449c65d177e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2eceb6592eba9ab20426827b833d0538ba7fc00fbd40f37ec020f4247d5e2c96
[INFO] running `Command { std: "docker" "start" "-a" "2eceb6592eba9ab20426827b833d0538ba7fc00fbd40f37ec020f4247d5e2c96", kill_on_drop: false }`
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking redis v0.24.0
[INFO] [stdout] error[E0277]: the trait bound `!: FromRedisValue` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/redis-0.24.0/src/script.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |                     self.load_cmd().query(con)?;
[INFO] [stdout]     |                                     ^^^^^ the trait `FromRedisValue` is not implemented for `!`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `FromRedisValue`:
[INFO] [stdout]               ()
[INFO] [stdout]               (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)
[INFO] [stdout]               (T10, T11, T12)
[INFO] [stdout]               (T11, T12)
[INFO] [stdout]               (T12,)
[INFO] [stdout]               (T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)
[INFO] [stdout]               (T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)
[INFO] [stdout]               (T4, T5, T6, T7, T8, T9, T10, T11, T12)
[INFO] [stdout]             and 43 others
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout] note: required by a bound in `Cmd::query`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/redis-0.24.0/src/cmd.rs:419:21
[INFO] [stdout]     |
[INFO] [stdout] 419 |     pub fn query<T: FromRedisValue>(&self, con: &mut dyn ConnectionLike) -> RedisResult<T> {
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^ required by this bound in `Cmd::query`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `redis` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2eceb6592eba9ab20426827b833d0538ba7fc00fbd40f37ec020f4247d5e2c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eceb6592eba9ab20426827b833d0538ba7fc00fbd40f37ec020f4247d5e2c96", kill_on_drop: false }`
[INFO] [stdout] 2eceb6592eba9ab20426827b833d0538ba7fc00fbd40f37ec020f4247d5e2c96