[INFO] fetching crate hv-stampede 0.2.1...
[INFO] checking hv-stampede-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate hv-stampede 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate hv-stampede 0.2.1 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 hv-stampede 0.2.1
[INFO] finished tweaking crates.io crate hv-stampede 0.2.1
[INFO] tweaked toml for crates.io crate hv-stampede 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages
[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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8a0f8d33f326f49d2f423ddef62d01ea5959cc8732a2eb0b975d938e27702e78
[INFO] running `Command { std: "docker" "start" "-a" "8a0f8d33f326f49d2f423ddef62d01ea5959cc8732a2eb0b975d938e27702e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a0f8d33f326f49d2f423ddef62d01ea5959cc8732a2eb0b975d938e27702e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a0f8d33f326f49d2f423ddef62d01ea5959cc8732a2eb0b975d938e27702e78", kill_on_drop: false }`
[INFO] [stdout] 8a0f8d33f326f49d2f423ddef62d01ea5959cc8732a2eb0b975d938e27702e78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 70d649918123b1e03915763e13164c78a459e29d66cc2b1950d49c60fdb8142a
[INFO] running `Command { std: "docker" "start" "-a" "70d649918123b1e03915763e13164c78a459e29d66cc2b1950d49c60fdb8142a", kill_on_drop: false }`
[INFO] [stderr]     Checking bumpalo v3.15.4
[INFO] [stderr]     Checking hv-stampede v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(maybe_uninit_slice, maybe_uninit_extra)]
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(maybe_uninit_slice, maybe_uninit_extra)]
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` 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 0.30s
[INFO] running `Command { std: "docker" "inspect" "70d649918123b1e03915763e13164c78a459e29d66cc2b1950d49c60fdb8142a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70d649918123b1e03915763e13164c78a459e29d66cc2b1950d49c60fdb8142a", kill_on_drop: false }`
[INFO] [stdout] 70d649918123b1e03915763e13164c78a459e29d66cc2b1950d49c60fdb8142a
[INFO] checking hv-stampede-0.2.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate hv-stampede 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate hv-stampede 0.2.1 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 hv-stampede 0.2.1
[INFO] finished tweaking crates.io crate hv-stampede 0.2.1
[INFO] tweaked toml for crates.io crate hv-stampede 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 11fd3656b885f8f9a905f2891ba6c952ca9c99585f2b6f4f474094504f830a07
[INFO] running `Command { std: "docker" "start" "-a" "11fd3656b885f8f9a905f2891ba6c952ca9c99585f2b6f4f474094504f830a07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11fd3656b885f8f9a905f2891ba6c952ca9c99585f2b6f4f474094504f830a07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11fd3656b885f8f9a905f2891ba6c952ca9c99585f2b6f4f474094504f830a07", kill_on_drop: false }`
[INFO] [stdout] 11fd3656b885f8f9a905f2891ba6c952ca9c99585f2b6f4f474094504f830a07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3ac0ace1dad2892791a0831104a136fa61454d4c908055e4ee8c74dbc0448e2f
[INFO] running `Command { std: "docker" "start" "-a" "3ac0ace1dad2892791a0831104a136fa61454d4c908055e4ee8c74dbc0448e2f", kill_on_drop: false }`
[INFO] [stderr]     Checking bumpalo v3.15.4
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bumpalo-3.15.4/src/collections/str/lossy.rs:82:28
[INFO] [stdout]    |
[INFO] [stdout] 82 |                       () => {{
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 83 | |                         unsafe {
[INFO] [stdout] 84 | |                             let r = Utf8LossyChunk {
[INFO] [stdout] 85 | |                                 valid: str::from_utf8_unchecked(&self.source[0..i_]),
[INFO] [stdout] ...  |
[INFO] [stdout] 90 | |                         }
[INFO] [stdout] 91 | |                     }};
[INFO] [stdout]    | |_____________________^ cannot infer type
[INFO] [stdout] ...
[INFO] [stdout] 97 |                               error!();
[INFO] [stdout]    |                               -------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bumpalo` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3ac0ace1dad2892791a0831104a136fa61454d4c908055e4ee8c74dbc0448e2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ac0ace1dad2892791a0831104a136fa61454d4c908055e4ee8c74dbc0448e2f", kill_on_drop: false }`
[INFO] [stdout] 3ac0ace1dad2892791a0831104a136fa61454d4c908055e4ee8c74dbc0448e2f