[INFO] fetching crate jsonrpc-derive 18.0.0...
[INFO] checking jsonrpc-derive-18.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate jsonrpc-derive 18.0.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate jsonrpc-derive 18.0.0
[INFO] finished tweaking crates.io crate jsonrpc-derive 18.0.0
[INFO] tweaked toml for crates.io crate jsonrpc-derive 18.0.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate jsonrpc-derive 18.0.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate jsonrpc-derive 18.0.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78af80a6b766b94aad49c7573a23ac7f5ff0fbe28c109b96c2c9510e96c762c8
[INFO] running `Command { std: "docker" "start" "-a" "78af80a6b766b94aad49c7573a23ac7f5ff0fbe28c109b96c2c9510e96c762c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78af80a6b766b94aad49c7573a23ac7f5ff0fbe28c109b96c2c9510e96c762c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78af80a6b766b94aad49c7573a23ac7f5ff0fbe28c109b96c2c9510e96c762c8", kill_on_drop: false }`
[INFO] [stdout] 78af80a6b766b94aad49c7573a23ac7f5ff0fbe28c109b96c2c9510e96c762c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1073d123a92f05b5f1d798e368edec2f686d2696fb0fb3b3eb74664ebeb17009
[INFO] running `Command { std: "docker" "start" "-a" "1073d123a92f05b5f1d798e368edec2f686d2696fb0fb3b3eb74664ebeb17009", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]    Compiling tokio v1.8.2
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking tinyvec v1.3.0
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]    Compiling trybuild v1.0.42
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-stream v0.1.7
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking jsonrpc-core v18.0.0
[INFO] [stderr]     Checking proc-macro-crate v0.1.5
[INFO] [stderr]     Checking jsonrpc-pubsub v18.0.0
[INFO] [stderr]     Checking jsonrpc-server-utils v18.0.0
[INFO] [stderr]     Checking jsonrpc-tcp-server v18.0.0
[INFO] [stderr]     Checking jsonrpc-derive v18.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking jsonrpc-client-transports v18.0.0
[INFO] [stderr]     Checking jsonrpc-core-client v18.0.0
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<bool, MyError>
[INFO] [stdout]   --> tests/pubsub-macros.rs:60:92
[INFO] [stdout]    |
[INFO] [stdout] 60 |       fn unsubscribe(&self, _meta: Option<Self::Metadata>, _id: SubscriptionId) -> Result<bool> {
[INFO] [stdout]    |  _______________________________________________________________________________________________^
[INFO] [stdout] 61 | |         Ok(true)
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<bool, MyError>
[INFO] [stdout]   --> tests/pubsub-macros.rs:61:3
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Ok(true)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, MyError>
[INFO] [stdout]   --> tests/pubsub-macros.rs:64:47
[INFO] [stdout]    |
[INFO] [stdout] 64 |       fn add(&self, a: u64, b: u64) -> Result<u64> {
[INFO] [stdout]    |  __________________________________________________^
[INFO] [stdout] 65 | |         Ok(a + b)
[INFO] [stdout] 66 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, MyError>
[INFO] [stdout]   --> tests/pubsub-macros.rs:65:3
[INFO] [stdout]    |
[INFO] [stdout] 65 |         Ok(a + b)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, MyError>
[INFO] [stdout]   --> tests/pubsub-macros.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[rpc]
[INFO] [stdout]    | ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `rpc` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<bool, MyError>
[INFO] [stdout]   --> tests/pubsub-macros.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[rpc]
[INFO] [stdout]    | ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `rpc` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jsonrpc-derive` (test "pubsub-macros") due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, MyError>
[INFO] [stdout]   --> tests/macros.rs:42:47
[INFO] [stdout]    |
[INFO] [stdout] 42 |       fn protocol_version(&self) -> Result<String> {
[INFO] [stdout]    |  __________________________________________________^
[INFO] [stdout] 43 | |         Ok("version1".into())
[INFO] [stdout] 44 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, MyError>
[INFO] [stdout]   --> tests/macros.rs:43:3
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Ok("version1".into())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, MyError>
[INFO] [stdout]   --> tests/macros.rs:46:39
[INFO] [stdout]    |
[INFO] [stdout] 46 |       fn neg(&self, a: i64) -> Result<i64> {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 47 | |         Ok(-a)
[INFO] [stdout] 48 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, MyError>
[INFO] [stdout]   --> tests/macros.rs:47:3
[INFO] [stdout]    |
[INFO] [stdout] 47 |         Ok(-a)
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, MyError>
[INFO] [stdout]   --> tests/macros.rs:50:47
[INFO] [stdout]    |
[INFO] [stdout] 50 |       fn add(&self, a: u64, b: u64) -> Result<u64> {
[INFO] [stdout]    |  __________________________________________________^
[INFO] [stdout] 51 | |         Ok(a + b)
[INFO] [stdout] 52 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, MyError>
[INFO] [stdout]   --> tests/macros.rs:51:3
[INFO] [stdout]    |
[INFO] [stdout] 51 |         Ok(a + b)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, MyError>
[INFO] [stdout]   --> tests/macros.rs:54:51
[INFO] [stdout]    |
[INFO] [stdout] 54 |       fn raw(&self, _params: Params) -> Result<String> {
[INFO] [stdout]    |  ______________________________________________________^
[INFO] [stdout] 55 | |         Ok("OK".into())
[INFO] [stdout] 56 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, MyError>
[INFO] [stdout]   --> tests/macros.rs:55:3
[INFO] [stdout]    |
[INFO] [stdout] 55 |         Ok("OK".into())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, MyError>
[INFO] [stdout]   --> tests/macros.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[rpc]
[INFO] [stdout]    | ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `rpc` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, MyError>
[INFO] [stdout]   --> tests/macros.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[rpc]
[INFO] [stdout]    | ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `rpc` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, MyError>
[INFO] [stdout]   --> tests/macros.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[rpc]
[INFO] [stdout]    | ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `rpc` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jsonrpc-derive` (test "macros") due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "1073d123a92f05b5f1d798e368edec2f686d2696fb0fb3b3eb74664ebeb17009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1073d123a92f05b5f1d798e368edec2f686d2696fb0fb3b3eb74664ebeb17009", kill_on_drop: false }`
[INFO] [stdout] 1073d123a92f05b5f1d798e368edec2f686d2696fb0fb3b3eb74664ebeb17009
