[INFO] fetching crate circle-rs 0.3.3...
[INFO] checking circle-rs-0.3.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate circle-rs 0.3.3 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate circle-rs 0.3.3 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate circle-rs 0.3.3
[INFO] finished tweaking crates.io crate circle-rs 0.3.3
[INFO] tweaked toml for crates.io crate circle-rs 0.3.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate circle-rs 0.3.3 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a77bf3f7f7dd42a8e52ab6fbab8dd6ba6a7d32a5eed7e67c113255f35cc8daa1
[INFO] running `Command { std: "docker" "start" "-a" "a77bf3f7f7dd42a8e52ab6fbab8dd6ba6a7d32a5eed7e67c113255f35cc8daa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a77bf3f7f7dd42a8e52ab6fbab8dd6ba6a7d32a5eed7e67c113255f35cc8daa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a77bf3f7f7dd42a8e52ab6fbab8dd6ba6a7d32a5eed7e67c113255f35cc8daa1", kill_on_drop: false }`
[INFO] [stdout] a77bf3f7f7dd42a8e52ab6fbab8dd6ba6a7d32a5eed7e67c113255f35cc8daa1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a526e254dcba89037a5b38f90414ad73b37046ca94b8fd787f3e8e0951513c8
[INFO] running `Command { std: "docker" "start" "-a" "9a526e254dcba89037a5b38f90414ad73b37046ca94b8fd787f3e8e0951513c8", kill_on_drop: false }`
[INFO] [stderr]     Checking circle-rs v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:165:30
[INFO] [stdout]     |
[INFO] [stdout] 165 |             .name(thread_name.clone().into())
[INFO] [stdout]     |                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:165:30
[INFO] [stdout]     |
[INFO] [stdout] 165 |             .name(thread_name.clone().into())
[INFO] [stdout]     |                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "9a526e254dcba89037a5b38f90414ad73b37046ca94b8fd787f3e8e0951513c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a526e254dcba89037a5b38f90414ad73b37046ca94b8fd787f3e8e0951513c8", kill_on_drop: false }`
[INFO] [stdout] 9a526e254dcba89037a5b38f90414ad73b37046ca94b8fd787f3e8e0951513c8
[INFO] checking circle-rs-0.3.3 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate circle-rs 0.3.3 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate circle-rs 0.3.3 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate circle-rs 0.3.3
[INFO] finished tweaking crates.io crate circle-rs 0.3.3
[INFO] tweaked toml for crates.io crate circle-rs 0.3.3 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate circle-rs 0.3.3 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e54eb8ef2d1bde3a0db86339abb6abbe4fed0c425ceeda603b30897383a321b
[INFO] running `Command { std: "docker" "start" "-a" "8e54eb8ef2d1bde3a0db86339abb6abbe4fed0c425ceeda603b30897383a321b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e54eb8ef2d1bde3a0db86339abb6abbe4fed0c425ceeda603b30897383a321b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e54eb8ef2d1bde3a0db86339abb6abbe4fed0c425ceeda603b30897383a321b", kill_on_drop: false }`
[INFO] [stdout] 8e54eb8ef2d1bde3a0db86339abb6abbe4fed0c425ceeda603b30897383a321b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce96cf6d4d25607ed82d0de958d9ac543681cf88b6a3d75bb47ca7ae665fe913
[INFO] running `Command { std: "docker" "start" "-a" "ce96cf6d4d25607ed82d0de958d9ac543681cf88b6a3d75bb47ca7ae665fe913", kill_on_drop: false }`
[INFO] [stderr]     Checking circle-rs v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |             .spawn(move || loop {
[INFO] [stdout]     |              ----- ^^^^^^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `Builder::spawn`
[INFO] [stdout]    --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:381:5
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]     |
[INFO] [stdout] 166 ~             .spawn(move || -> /* Type */ { loop {
[INFO] [stdout] 167 |                 bar.render().unwrap();
[INFO] [stdout] 168 |                 thread::sleep(sleep);
[INFO] [stdout] 169 ~             } })?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 166 |             .spawn(move || loop {
[INFO] [stdout]     |              ----- ^^^^^^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `Builder::spawn`
[INFO] [stdout]    --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:381:5
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]     |
[INFO] [stdout] 166 ~             .spawn(move || -> /* Type */ { loop {
[INFO] [stdout] 167 |                 bar.render().unwrap();
[INFO] [stdout] 168 |                 thread::sleep(sleep);
[INFO] [stdout] 169 ~             } })?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `circle-rs` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `circle-rs` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ce96cf6d4d25607ed82d0de958d9ac543681cf88b6a3d75bb47ca7ae665fe913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce96cf6d4d25607ed82d0de958d9ac543681cf88b6a3d75bb47ca7ae665fe913", kill_on_drop: false }`
[INFO] [stdout] ce96cf6d4d25607ed82d0de958d9ac543681cf88b6a3d75bb47ca7ae665fe913