[INFO] cloning repository https://github.com/udzura/redis-query-digest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/udzura/redis-query-digest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudzura%2Fredis-query-digest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudzura%2Fredis-query-digest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2306ca49141922b87099c0f0bafcd45777284de9
[INFO] checking udzura/redis-query-digest against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudzura%2Fredis-query-digest" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/udzura/redis-query-digest on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/udzura/redis-query-digest
[INFO] finished tweaking git repo https://github.com/udzura/redis-query-digest
[INFO] tweaked toml for git repo https://github.com/udzura/redis-query-digest written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/udzura/redis-query-digest 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pktparse v0.7.1
[INFO] [stderr]   Downloaded pcap v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f69011cd246e2738a2af8da74c2b8b7cde61f419850f19ab451af836cf512ac5
[INFO] running `Command { std: "docker" "start" "-a" "f69011cd246e2738a2af8da74c2b8b7cde61f419850f19ab451af836cf512ac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f69011cd246e2738a2af8da74c2b8b7cde61f419850f19ab451af836cf512ac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f69011cd246e2738a2af8da74c2b8b7cde61f419850f19ab451af836cf512ac5", kill_on_drop: false }`
[INFO] [stdout] f69011cd246e2738a2af8da74c2b8b7cde61f419850f19ab451af836cf512ac5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50f94532e09bbcdaafbe0969f81b5a90fe50300e785b0468cee773ea291faf70
[INFO] running `Command { std: "docker" "start" "-a" "50f94532e09bbcdaafbe0969f81b5a90fe50300e785b0468cee773ea291faf70", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]     Checking pktparse v0.7.1
[INFO] [stderr]    Compiling pcap v0.11.0
[INFO] [stderr]     Checking redis-query-digest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         drop(data);
[INFO] [stdout]    |         ^^^^^----^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `&[u8]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         drop(data);
[INFO] [stdout]    |         ^^^^^----^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `&[u8]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_references)]` 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` profile [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "50f94532e09bbcdaafbe0969f81b5a90fe50300e785b0468cee773ea291faf70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50f94532e09bbcdaafbe0969f81b5a90fe50300e785b0468cee773ea291faf70", kill_on_drop: false }`
[INFO] [stdout] 50f94532e09bbcdaafbe0969f81b5a90fe50300e785b0468cee773ea291faf70
[INFO] checking udzura/redis-query-digest against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fudzura%2Fredis-query-digest" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/udzura/redis-query-digest on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/udzura/redis-query-digest
[INFO] finished tweaking git repo https://github.com/udzura/redis-query-digest
[INFO] tweaked toml for git repo https://github.com/udzura/redis-query-digest written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/udzura/redis-query-digest 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8a50a761e0bcc39010adc2f561ed0f8e16e16b031b12acec2bd8727b65e8753
[INFO] running `Command { std: "docker" "start" "-a" "a8a50a761e0bcc39010adc2f561ed0f8e16e16b031b12acec2bd8727b65e8753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8a50a761e0bcc39010adc2f561ed0f8e16e16b031b12acec2bd8727b65e8753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8a50a761e0bcc39010adc2f561ed0f8e16e16b031b12acec2bd8727b65e8753", kill_on_drop: false }`
[INFO] [stdout] a8a50a761e0bcc39010adc2f561ed0f8e16e16b031b12acec2bd8727b65e8753
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47d878e32a1fa0273c09fcb9ec22e8865be78a572dd3ea1b2b5f6e8b28e18fd3
[INFO] running `Command { std: "docker" "start" "-a" "47d878e32a1fa0273c09fcb9ec22e8865be78a572dd3ea1b2b5f6e8b28e18fd3", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]     Checking pktparse v0.7.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.6.0/src/exec.rs:848:13
[INFO] [stdout]     |
[INFO] [stdout] 848 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 849 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 850 | |                 self.cache.value(),
[INFO] [stdout] 851 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 862 | |                 Quit => return Some(Quit),
[INFO] [stdout] 863 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "47d878e32a1fa0273c09fcb9ec22e8865be78a572dd3ea1b2b5f6e8b28e18fd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47d878e32a1fa0273c09fcb9ec22e8865be78a572dd3ea1b2b5f6e8b28e18fd3", kill_on_drop: false }`
[INFO] [stdout] 47d878e32a1fa0273c09fcb9ec22e8865be78a572dd3ea1b2b5f6e8b28e18fd3