[INFO] cloning repository https://github.com/prajithkb/tokio-experiments-redis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prajithkb/tokio-experiments-redis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajithkb%2Ftokio-experiments-redis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajithkb%2Ftokio-experiments-redis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1562f14a9c758513b807efacae9bf4f17ab74535
[INFO] checking prajithkb/tokio-experiments-redis against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajithkb%2Ftokio-experiments-redis" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/prajithkb/tokio-experiments-redis
[INFO] finished tweaking git repo https://github.com/prajithkb/tokio-experiments-redis
[INFO] tweaked toml for git repo https://github.com/prajithkb/tokio-experiments-redis written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/prajithkb/tokio-experiments-redis on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/prajithkb/tokio-experiments-redis 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" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.8.3
[INFO] [stderr]   Downloaded structopt v0.3.21
[INFO] [stderr]   Downloaded structopt-derive v0.4.14
[INFO] [stderr]   Downloaded regex v1.4.4
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[INFO] [stdout] f258bf538fb63c40301c71415ec4c1e700bde300e6990987f8d093ec161f6616
[INFO] running `Command { std: "docker" "start" "-a" "f258bf538fb63c40301c71415ec4c1e700bde300e6990987f8d093ec161f6616", kill_on_drop: false }`
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[INFO] [stdout] f258bf538fb63c40301c71415ec4c1e700bde300e6990987f8d093ec161f6616
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 944c276092efc19e183a3d6d0af1e18b22971551d369d92702f4df800b42a214
[INFO] running `Command { std: "docker" "start" "-a" "944c276092efc19e183a3d6d0af1e18b22971551d369d92702f4df800b42a214", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling quote v1.0.9
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[INFO] [stderr]     Checking regex-syntax v0.6.23
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[INFO] [stderr]     Checking parking_lot v0.11.1
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[INFO] [stderr]     Checking atoi v0.4.0
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking tokio-mini-redis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `operation` is never read
[INFO] [stdout]   --> src/database.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct OperationSubscription {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] 47 |     operation: Operation,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OperationSubscription` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Subscriber` is never used
[INFO] [stdout]    --> src/database.rs:132:18
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub(crate) trait Subscriber: Send {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parts` is never read
[INFO] [stdout]   --> src/parse.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct Parse {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 70 |     /// An iterator for type
[INFO] [stdout] 71 |     parts: VecDeque<Type>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Parse` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/database.rs:151:30
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn lock_and_access_inner(&mut self) -> MutexGuard<HashMap<RedisString, Value>> {
[INFO] [stdout]     |                              ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn lock_and_access_inner(&mut self) -> MutexGuard<'_, HashMap<RedisString, Value>> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/database.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         &mut self,
[INFO] [stdout]     |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 157 |     ) -> MutexGuard<HashMap<RedisString, LinkedList<OperationSubscription>>> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     ) -> MutexGuard<'_, HashMap<RedisString, LinkedList<OperationSubscription>>> {
[INFO] [stdout]     |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/bin/cli.rs:166:17
[INFO] [stdout]     |
[INFO] [stdout] 166 |     ServerError(String),
[INFO] [stdout]     |     ----------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CliError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 166 -     ServerError(String),
[INFO] [stdout] 166 +     ServerError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/bin/cli.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |     ClientError(String),
[INFO] [stdout]     |     ----------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CliError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 167 -     ClientError(String),
[INFO] [stdout] 167 +     ClientError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `operation` is never read
[INFO] [stdout]   --> src/database.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct OperationSubscription {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] 47 |     operation: Operation,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OperationSubscription` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Subscriber` is never used
[INFO] [stdout]    --> src/database.rs:132:18
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub(crate) trait Subscriber: Send {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parts` is never read
[INFO] [stdout]   --> src/parse.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct Parse {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 70 |     /// An iterator for type
[INFO] [stdout] 71 |     parts: VecDeque<Type>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Parse` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/database.rs:151:30
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn lock_and_access_inner(&mut self) -> MutexGuard<HashMap<RedisString, Value>> {
[INFO] [stdout]     |                              ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn lock_and_access_inner(&mut self) -> MutexGuard<'_, HashMap<RedisString, Value>> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/database.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         &mut self,
[INFO] [stdout]     |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 157 |     ) -> MutexGuard<HashMap<RedisString, LinkedList<OperationSubscription>>> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     ) -> MutexGuard<'_, HashMap<RedisString, LinkedList<OperationSubscription>>> {
[INFO] [stdout]     |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/bin/cli.rs:166:17
[INFO] [stdout]     |
[INFO] [stdout] 166 |     ServerError(String),
[INFO] [stdout]     |     ----------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CliError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 166 -     ServerError(String),
[INFO] [stdout] 166 +     ServerError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/bin/cli.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |     ClientError(String),
[INFO] [stdout]     |     ----------- ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CliError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 167 -     ClientError(String),
[INFO] [stdout] 167 +     ClientError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.43s
[INFO] running `Command { std: "docker" "inspect" "944c276092efc19e183a3d6d0af1e18b22971551d369d92702f4df800b42a214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "944c276092efc19e183a3d6d0af1e18b22971551d369d92702f4df800b42a214", kill_on_drop: false }`
[INFO] [stdout] 944c276092efc19e183a3d6d0af1e18b22971551d369d92702f4df800b42a214
