[INFO] cloning repository https://github.com/nul-reference/redis_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nul-reference/redis_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnul-reference%2Fredis_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnul-reference%2Fredis_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35110f6ec7cb1d7beaceab3b3d78193ee6cfed16
[INFO] checking nul-reference/redis_test against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnul-reference%2Fredis_test" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nul-reference/redis_test on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nul-reference/redis_test
[INFO] finished tweaking git repo https://github.com/nul-reference/redis_test
[INFO] tweaked toml for git repo https://github.com/nul-reference/redis_test written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nul-reference/redis_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04b3ec38276deae591dfa9f94347b9f39455fd3a459af6c6e5506cb356056faa
[INFO] running `Command { std: "docker" "start" "-a" "04b3ec38276deae591dfa9f94347b9f39455fd3a459af6c6e5506cb356056faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04b3ec38276deae591dfa9f94347b9f39455fd3a459af6c6e5506cb356056faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04b3ec38276deae591dfa9f94347b9f39455fd3a459af6c6e5506cb356056faa", kill_on_drop: false }`
[INFO] [stdout] 04b3ec38276deae591dfa9f94347b9f39455fd3a459af6c6e5506cb356056faa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f81b1a242421cf494393cc1ed795d5b0f74250fdf2fa2a453b2734b83c2cc2fe
[INFO] running `Command { std: "docker" "start" "-a" "f81b1a242421cf494393cc1ed795d5b0f74250fdf2fa2a453b2734b83c2cc2fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking sha1_smol v1.0.0
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking combine v4.6.6
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking redis v0.22.3
[INFO] [stderr]     Checking redis_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.45s
[INFO] running `Command { std: "docker" "inspect" "f81b1a242421cf494393cc1ed795d5b0f74250fdf2fa2a453b2734b83c2cc2fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f81b1a242421cf494393cc1ed795d5b0f74250fdf2fa2a453b2734b83c2cc2fe", kill_on_drop: false }`
[INFO] [stdout] f81b1a242421cf494393cc1ed795d5b0f74250fdf2fa2a453b2734b83c2cc2fe
[INFO] checking nul-reference/redis_test against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnul-reference%2Fredis_test" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nul-reference/redis_test on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nul-reference/redis_test
[INFO] finished tweaking git repo https://github.com/nul-reference/redis_test
[INFO] tweaked toml for git repo https://github.com/nul-reference/redis_test written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nul-reference/redis_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b85359b5c1fda1d03492a5acd3104b85ca477c0c94f3b29c9c16a381f069c037
[INFO] running `Command { std: "docker" "start" "-a" "b85359b5c1fda1d03492a5acd3104b85ca477c0c94f3b29c9c16a381f069c037", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b85359b5c1fda1d03492a5acd3104b85ca477c0c94f3b29c9c16a381f069c037", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85359b5c1fda1d03492a5acd3104b85ca477c0c94f3b29c9c16a381f069c037", kill_on_drop: false }`
[INFO] [stdout] b85359b5c1fda1d03492a5acd3104b85ca477c0c94f3b29c9c16a381f069c037
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d328d3e0c7529681c325707b54cdfc1c07030658753747834f4edd1ae0c51903
[INFO] running `Command { std: "docker" "start" "-a" "d328d3e0c7529681c325707b54cdfc1c07030658753747834f4edd1ae0c51903", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking sha1_smol v1.0.0
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking combine v4.6.6
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking redis v0.22.3
[INFO] [stdout] error[E0277]: the trait bound `!: FromRedisValue` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/redis-0.22.3/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 41 others
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
[INFO] [stdout]     = help: did you intend 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-6f17d22bba15001f/redis-0.22.3/src/cmd.rs:367:21
[INFO] [stdout]     |
[INFO] [stdout] 367 |     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] error: aborting due to 1 previous error
[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 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d328d3e0c7529681c325707b54cdfc1c07030658753747834f4edd1ae0c51903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d328d3e0c7529681c325707b54cdfc1c07030658753747834f4edd1ae0c51903", kill_on_drop: false }`
[INFO] [stdout] d328d3e0c7529681c325707b54cdfc1c07030658753747834f4edd1ae0c51903