[INFO] fetching crate jsonrpc-derive 17.0.0...
[INFO] checking jsonrpc-derive-17.0.0 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate jsonrpc-derive 17.0.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate jsonrpc-derive 17.0.0 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonrpc-derive 17.0.0
[INFO] finished tweaking crates.io crate jsonrpc-derive 17.0.0
[INFO] tweaked toml for crates.io crate jsonrpc-derive 17.0.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate jsonrpc-derive 17.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fef99adbbd291d61a80f50a2c0cb951f713180799ad13362f5b1cfeecb7e880
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4fef99adbbd291d61a80f50a2c0cb951f713180799ad13362f5b1cfeecb7e880", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fef99adbbd291d61a80f50a2c0cb951f713180799ad13362f5b1cfeecb7e880", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fef99adbbd291d61a80f50a2c0cb951f713180799ad13362f5b1cfeecb7e880", kill_on_drop: false }`
[INFO] [stdout] 4fef99adbbd291d61a80f50a2c0cb951f713180799ad13362f5b1cfeecb7e880
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38b7bba90c298e40d1f5b6255640f1eeddf2f2b78c2c965517b1fc8e5ce278e3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "38b7bba90c298e40d1f5b6255640f1eeddf2f2b78c2c965517b1fc8e5ce278e3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling trybuild v1.0.38
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking assert_matches v1.4.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking quote v1.0.8
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]    Compiling futures-macro v0.3.12
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]     Checking futures-executor v0.3.12
[INFO] [stderr]     Checking futures v0.3.12
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking proc-macro-crate v0.1.5
[INFO] [stderr]     Checking jsonrpc-derive v17.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking jsonrpc-core v17.0.0
[INFO] [stderr]     Checking jsonrpc-pubsub v17.0.0
[INFO] [stderr]     Checking jsonrpc-server-utils v17.0.0
[INFO] [stderr]     Checking jsonrpc-tcp-server v17.0.0
[INFO] [stderr]     Checking jsonrpc-client-transports v17.0.0
[INFO] [stderr]     Checking jsonrpc-core-client v17.0.0
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]   --> tests/client.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 assert_matches!(res, Ok(Ok(7)));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]   --> tests/client.rs:8:6
[INFO] [stdout]    |
[INFO] [stdout] 8  |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]    = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]   --> tests/client.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 assert_matches!(res, Ok(Ok(x)) if x == expected);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]   --> tests/client.rs:51:6
[INFO] [stdout]    |
[INFO] [stdout] 51 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]    = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `assert_matches` is ambiguous (glob import vs any other name from outer scope during import/macro resolution)
[INFO] [stdout]    --> tests/client.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 assert_matches!(res, Ok(Ok(x)) if x == expected);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: `assert_matches` could refer to a macro from prelude
[INFO] [stdout] note: `assert_matches` could also refer to the macro imported here
[INFO] [stdout]    --> tests/client.rs:93:6
[INFO] [stdout]     |
[INFO] [stdout] 93  |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `assert_matches` to disambiguate
[INFO] [stdout]     = help: or use `self::assert_matches` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jsonrpc-derive`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "38b7bba90c298e40d1f5b6255640f1eeddf2f2b78c2c965517b1fc8e5ce278e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38b7bba90c298e40d1f5b6255640f1eeddf2f2b78c2c965517b1fc8e5ce278e3", kill_on_drop: false }`
[INFO] [stdout] 38b7bba90c298e40d1f5b6255640f1eeddf2f2b78c2c965517b1fc8e5ce278e3