[INFO] fetching crate x11rb-async 0.12.0...
[INFO] checking x11rb-async-0.12.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate x11rb-async 0.12.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate x11rb-async 0.12.0 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 x11rb-async 0.12.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate x11rb-async 0.12.0
[INFO] tweaked toml for crates.io crate x11rb-async 0.12.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate x11rb-async 0.12.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded as-raw-xcb-connection v1.0.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.15
[INFO] [stderr]   Downloaded gethostname v0.3.0
[INFO] [stderr]   Downloaded regex v1.8.3
[INFO] [stderr]   Downloaded rustix v0.37.19
[INFO] [stderr]   Downloaded x11rb-protocol v0.12.0
[INFO] [stderr]   Downloaded libc v0.2.144
[INFO] [stderr]   Downloaded regex-syntax v0.7.2
[INFO] [stderr]   Downloaded x11rb v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2a41a644aaefb4776401e97fbc3a7056e44de3f4366b4f131ef3e08ee837a501
[INFO] running `Command { std: "docker" "start" "-a" "2a41a644aaefb4776401e97fbc3a7056e44de3f4366b4f131ef3e08ee837a501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a41a644aaefb4776401e97fbc3a7056e44de3f4366b4f131ef3e08ee837a501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a41a644aaefb4776401e97fbc3a7056e44de3f4366b4f131ef3e08ee837a501", kill_on_drop: false }`
[INFO] [stdout] 2a41a644aaefb4776401e97fbc3a7056e44de3f4366b4f131ef3e08ee837a501
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] af13280ae318511e555b07dd057999c124334f6d7b52f25bbf3e5c0d8c81b852
[INFO] running `Command { std: "docker" "start" "-a" "af13280ae318511e555b07dd057999c124334f6d7b52f25bbf3e5c0d8c81b852", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]    Compiling x11rb v0.12.0
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking regex v1.8.3
[INFO] [stderr]     Checking io-lifetimes v1.0.11
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking gethostname v0.3.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]     Checking x11rb-protocol v0.12.0
[INFO] [stderr]     Checking x11rb-async v0.12.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/connection.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::boxed::Box;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/connection.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::boxed::Box;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.89s
[INFO] running `Command { std: "docker" "inspect" "af13280ae318511e555b07dd057999c124334f6d7b52f25bbf3e5c0d8c81b852", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af13280ae318511e555b07dd057999c124334f6d7b52f25bbf3e5c0d8c81b852", kill_on_drop: false }`
[INFO] [stdout] af13280ae318511e555b07dd057999c124334f6d7b52f25bbf3e5c0d8c81b852
[INFO] checking x11rb-async-0.12.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate x11rb-async 0.12.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate x11rb-async 0.12.0 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 x11rb-async 0.12.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate x11rb-async 0.12.0
[INFO] tweaked toml for crates.io crate x11rb-async 0.12.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate x11rb-async 0.12.0 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 29d97143e06fd5c7f54d824850c078fcc0c1cfb4280291649c0a236c7c51574b
[INFO] running `Command { std: "docker" "start" "-a" "29d97143e06fd5c7f54d824850c078fcc0c1cfb4280291649c0a236c7c51574b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29d97143e06fd5c7f54d824850c078fcc0c1cfb4280291649c0a236c7c51574b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29d97143e06fd5c7f54d824850c078fcc0c1cfb4280291649c0a236c7c51574b", kill_on_drop: false }`
[INFO] [stdout] 29d97143e06fd5c7f54d824850c078fcc0c1cfb4280291649c0a236c7c51574b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 6d18007ee5ea6e8d2684b9dedb1c5b80f37792af79f68943dbeb3b2a4fff9a5d
[INFO] running `Command { std: "docker" "start" "-a" "6d18007ee5ea6e8d2684b9dedb1c5b80f37792af79f68943dbeb3b2a4fff9a5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]    Compiling x11rb v0.12.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-lite-1.13.0/src/future.rs:469:27
[INFO] [stdout]     |
[INFO] [stdout] 469 |             let t1 = res1.map_err(|_| unreachable!()).unwrap();
[INFO] [stdout]     |                           ^^^^^^^ cannot infer type of the type parameter `F` declared on the method `map_err`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 469 |             let t1 = res1.map_err::<F, _>(|_| unreachable!()).unwrap();
[INFO] [stdout]     |                                  ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-lite` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6d18007ee5ea6e8d2684b9dedb1c5b80f37792af79f68943dbeb3b2a4fff9a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d18007ee5ea6e8d2684b9dedb1c5b80f37792af79f68943dbeb3b2a4fff9a5d", kill_on_drop: false }`
[INFO] [stdout] 6d18007ee5ea6e8d2684b9dedb1c5b80f37792af79f68943dbeb3b2a4fff9a5d