[INFO] fetching crate mozdevice 0.5.1...
[INFO] checking mozdevice-0.5.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate mozdevice 0.5.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate mozdevice 0.5.1 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 mozdevice 0.5.1
[INFO] finished tweaking crates.io crate mozdevice 0.5.1
[INFO] tweaked toml for crates.io crate mozdevice 0.5.1 written to /workspace/builds/worker-4-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]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded unix_str v1.0.0
[INFO] [stderr]   Downloaded unix_path v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 221d65408abb806b56e441eb28205d141e75d6d326fd0de744ee0c7028cd5bce
[INFO] running `Command { std: "docker" "start" "-a" "221d65408abb806b56e441eb28205d141e75d6d326fd0de744ee0c7028cd5bce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "221d65408abb806b56e441eb28205d141e75d6d326fd0de744ee0c7028cd5bce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "221d65408abb806b56e441eb28205d141e75d6d326fd0de744ee0c7028cd5bce", kill_on_drop: false }`
[INFO] [stdout] 221d65408abb806b56e441eb28205d141e75d6d326fd0de744ee0c7028cd5bce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bdd2dc0496c40dcdab2ac4d3cf18fa230a96dc2b68bdeeb4ef04a9a1ceca5cab
[INFO] running `Command { std: "docker" "start" "-a" "bdd2dc0496c40dcdab2ac4d3cf18fa230a96dc2b68bdeeb4ef04a9a1ceca5cab", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking unix_str v1.0.0
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking unix_path v1.0.1
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking mozdevice v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "bdd2dc0496c40dcdab2ac4d3cf18fa230a96dc2b68bdeeb4ef04a9a1ceca5cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdd2dc0496c40dcdab2ac4d3cf18fa230a96dc2b68bdeeb4ef04a9a1ceca5cab", kill_on_drop: false }`
[INFO] [stdout] bdd2dc0496c40dcdab2ac4d3cf18fa230a96dc2b68bdeeb4ef04a9a1ceca5cab
[INFO] checking mozdevice-0.5.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate mozdevice 0.5.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate mozdevice 0.5.1 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 mozdevice 0.5.1
[INFO] finished tweaking crates.io crate mozdevice 0.5.1
[INFO] tweaked toml for crates.io crate mozdevice 0.5.1 written to /workspace/builds/worker-4-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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a998a5d1f404b14a8ae8534c44618ef1aa20770a2fea6b793e1ab5d74c036f34
[INFO] running `Command { std: "docker" "start" "-a" "a998a5d1f404b14a8ae8534c44618ef1aa20770a2fea6b793e1ab5d74c036f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a998a5d1f404b14a8ae8534c44618ef1aa20770a2fea6b793e1ab5d74c036f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a998a5d1f404b14a8ae8534c44618ef1aa20770a2fea6b793e1ab5d74c036f34", kill_on_drop: false }`
[INFO] [stdout] a998a5d1f404b14a8ae8534c44618ef1aa20770a2fea6b793e1ab5d74c036f34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2bd72923edddd6a34a049770a6ad55f69074a4cb9251f08350f20f847d2ae163
[INFO] running `Command { std: "docker" "start" "-a" "2bd72923edddd6a34a049770a6ad55f69074a4cb9251f08350f20f847d2ae163", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking unix_str v1.0.0
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/unix_str-1.0.0/src/lossy.rs:93:28
[INFO] [stdout]     |
[INFO] [stdout] 93  |                       () => {{
[INFO] [stdout]     |  ____________________________^
[INFO] [stdout] 94  | |                         // SAFETY: We have checked up to `i` that source is valid UTF-8.
[INFO] [stdout] 95  | |                         unsafe {
[INFO] [stdout] 96  | |                             let r = Utf8LossyChunk {
[INFO] [stdout] ...   |
[INFO] [stdout] 102 | |                         }
[INFO] [stdout] 103 | |                     }};
[INFO] [stdout]     | |_____________________^ cannot infer type
[INFO] [stdout] ...
[INFO] [stdout] 109 |                               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 `unix_str` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2bd72923edddd6a34a049770a6ad55f69074a4cb9251f08350f20f847d2ae163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd72923edddd6a34a049770a6ad55f69074a4cb9251f08350f20f847d2ae163", kill_on_drop: false }`
[INFO] [stdout] 2bd72923edddd6a34a049770a6ad55f69074a4cb9251f08350f20f847d2ae163