[INFO] fetching crate roundrobin 0.1.1...
[INFO] checking roundrobin-0.1.1 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate roundrobin 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate roundrobin 0.1.1 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate roundrobin 0.1.1
[INFO] finished tweaking crates.io crate roundrobin 0.1.1
[INFO] tweaked toml for crates.io crate roundrobin 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate roundrobin 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12c6845ce49bc69a4422e6e9be34196f657a1695dea8b6c34c6ce5453d57c40f
[INFO] running `Command { std: "docker" "start" "-a" "12c6845ce49bc69a4422e6e9be34196f657a1695dea8b6c34c6ce5453d57c40f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12c6845ce49bc69a4422e6e9be34196f657a1695dea8b6c34c6ce5453d57c40f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12c6845ce49bc69a4422e6e9be34196f657a1695dea8b6c34c6ce5453d57c40f", kill_on_drop: false }`
[INFO] [stdout] 12c6845ce49bc69a4422e6e9be34196f657a1695dea8b6c34c6ce5453d57c40f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27f1a04549db03e9546d627e13d6525cec26782cc9e6d0eebbba182bbed8b3ce
[INFO] running `Command { std: "docker" "start" "-a" "27f1a04549db03e9546d627e13d6525cec26782cc9e6d0eebbba182bbed8b3ce", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking roundrobin v0.1.1 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/rr.rs (1 fix)
[INFO] [stderr]        Fixed src/wrr.rs (1 fix)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking roundrobin v0.1.1 (/tmp/fixit)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Server`
[INFO] [stdout]   --> src/rr.rs:51:24
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let server01 = Server::new(url01.clone());
[INFO] [stdout]    |                        ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use crate::rr::Server;
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use crate::wrr::Server;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `RoundRobinBalancer`
[INFO] [stdout]   --> src/rr.rs:53:22
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let mut rr = RoundRobinBalancer::new();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use crate::rr::RoundRobinBalancer;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `WeightedRoundRobinBalancer`
[INFO] [stdout]    --> src/wrr.rs:138:23
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut wrr = WeightedRoundRobinBalancer::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 135 |     use crate::wrr::WeightedRoundRobinBalancer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `WeightedRoundRobinBalancer`
[INFO] [stdout]    --> src/wrr.rs:159:23
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut wrr = WeightedRoundRobinBalancer::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 135 |     use crate::wrr::WeightedRoundRobinBalancer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `WeightedRoundRobinBalancer`
[INFO] [stdout]    --> src/wrr.rs:180:23
[INFO] [stdout]     |
[INFO] [stdout] 180 |         let mut wrr = WeightedRoundRobinBalancer::new();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 135 |     use crate::wrr::WeightedRoundRobinBalancer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `roundrobin` due to 6 previous errors
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to check after updating to 2021
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo check --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "27f1a04549db03e9546d627e13d6525cec26782cc9e6d0eebbba182bbed8b3ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27f1a04549db03e9546d627e13d6525cec26782cc9e6d0eebbba182bbed8b3ce", kill_on_drop: false }`
[INFO] [stdout] 27f1a04549db03e9546d627e13d6525cec26782cc9e6d0eebbba182bbed8b3ce