[INFO] fetching crate jsonrpc 0.16.0...
[INFO] checking jsonrpc-0.16.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-2
[INFO] extracting crate jsonrpc 0.16.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate jsonrpc 0.16.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonrpc 0.16.0
[INFO] finished tweaking crates.io crate jsonrpc 0.16.0
[INFO] tweaked toml for crates.io crate jsonrpc 0.16.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded minreq v2.11.0
[INFO] [stderr]   Downloaded socks v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72f123295cc643beb48f31137409240b4d85270d0b4ed7394a08e67f47056b8d
[INFO] running `Command { std: "docker" "start" "-a" "72f123295cc643beb48f31137409240b4d85270d0b4ed7394a08e67f47056b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72f123295cc643beb48f31137409240b4d85270d0b4ed7394a08e67f47056b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72f123295cc643beb48f31137409240b4d85270d0b4ed7394a08e67f47056b8d", kill_on_drop: false }`
[INFO] [stdout] 72f123295cc643beb48f31137409240b4d85270d0b4ed7394a08e67f47056b8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4884fd0dfe3b1a039f80b54297b29739d0a985a77c7629c2f8a6a5727ffddc4
[INFO] running `Command { std: "docker" "start" "-a" "a4884fd0dfe3b1a039f80b54297b29739d0a985a77c7629c2f8a6a5727ffddc4", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking jsonrpc v0.16.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Cow` is imported redundantly
[INFO] [stdout]    --> src/client.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 203 |     use super::*;
[INFO] [stdout]     |         -------- the item `Cow` is already imported here
[INFO] [stdout] 204 |
[INFO] [stdout] 205 |     use std::borrow::Cow;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]    --> src/error.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |     use serde_json;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:14:1
[INFO] [stdout]     |
[INFO] [stdout] 14  | pub extern crate serde_json;
[INFO] [stdout]     | ---------------------------- the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `net` is imported redundantly
[INFO] [stdout]    --> src/http/simple_http.rs:665:9
[INFO] [stdout]     |
[INFO] [stdout] 665 |     use std::net;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 669 |     use super::*;
[INFO] [stdout]     |         -------- the item `net` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RawValue` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     use super::*;
[INFO] [stdout]     |         -------- the item `RawValue` is already imported here
[INFO] [stdout] 125 |
[INFO] [stdout] 126 |     use serde_json::value::RawValue;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.29s
[INFO] running `Command { std: "docker" "inspect" "a4884fd0dfe3b1a039f80b54297b29739d0a985a77c7629c2f8a6a5727ffddc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4884fd0dfe3b1a039f80b54297b29739d0a985a77c7629c2f8a6a5727ffddc4", kill_on_drop: false }`
[INFO] [stdout] a4884fd0dfe3b1a039f80b54297b29739d0a985a77c7629c2f8a6a5727ffddc4