[INFO] fetching crate mer 0.4.0... [INFO] checking mer-0.4.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate mer 0.4.0 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate mer 0.4.0 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 mer 0.4.0 [INFO] finished tweaking crates.io crate mer 0.4.0 [INFO] tweaked toml for crates.io crate mer 0.4.0 written to /workspace/builds/worker-6-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 8 packages [INFO] [stderr] Adding scroll v0.10.2 (latest: v0.12.0) [INFO] [stderr] Adding scroll_derive v0.10.5 (latest: v0.12.0) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a054bd36beee72f3cfdec5ad61340a3da62709b36ae266e71b8911596016265c [INFO] running `Command { std: "docker" "start" "-a" "a054bd36beee72f3cfdec5ad61340a3da62709b36ae266e71b8911596016265c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a054bd36beee72f3cfdec5ad61340a3da62709b36ae266e71b8911596016265c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a054bd36beee72f3cfdec5ad61340a3da62709b36ae266e71b8911596016265c", kill_on_drop: false }` [INFO] [stdout] a054bd36beee72f3cfdec5ad61340a3da62709b36ae266e71b8911596016265c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 78086259019c4bc723f061428f054fae59839954d286bd3586d8c96229dcc3aa [INFO] running `Command { std: "docker" "start" "-a" "78086259019c4bc723f061428f054fae59839954d286bd3586d8c96229dcc3aa", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking bit_field v0.10.2 [INFO] [stderr] Compiling scroll_derive v0.10.5 [INFO] [stderr] Checking scroll v0.10.2 [INFO] [stderr] Checking mer v0.4.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.43s [INFO] running `Command { std: "docker" "inspect" "78086259019c4bc723f061428f054fae59839954d286bd3586d8c96229dcc3aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "78086259019c4bc723f061428f054fae59839954d286bd3586d8c96229dcc3aa", kill_on_drop: false }` [INFO] [stdout] 78086259019c4bc723f061428f054fae59839954d286bd3586d8c96229dcc3aa [INFO] checking mer-0.4.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate mer 0.4.0 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate mer 0.4.0 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 mer 0.4.0 [INFO] finished tweaking crates.io crate mer 0.4.0 [INFO] tweaked toml for crates.io crate mer 0.4.0 written to /workspace/builds/worker-6-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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 43ebce36c0eb68ba0c751b6227625b94949a985c6b946c3242f7923d94938959 [INFO] running `Command { std: "docker" "start" "-a" "43ebce36c0eb68ba0c751b6227625b94949a985c6b946c3242f7923d94938959", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "43ebce36c0eb68ba0c751b6227625b94949a985c6b946c3242f7923d94938959", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "43ebce36c0eb68ba0c751b6227625b94949a985c6b946c3242f7923d94938959", kill_on_drop: false }` [INFO] [stdout] 43ebce36c0eb68ba0c751b6227625b94949a985c6b946c3242f7923d94938959 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a327e2548374efc9bac48cdb91b9e7ccfa0f18a5c3c2d7532a83c7b384676844 [INFO] running `Command { std: "docker" "start" "-a" "a327e2548374efc9bac48cdb91b9e7ccfa0f18a5c3c2d7532a83c7b384676844", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking bit_field v0.10.2 [INFO] [stderr] Compiling scroll_derive v0.10.5 [INFO] [stderr] Checking scroll v0.10.2 [INFO] [stderr] Checking mer v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/lib.rs:38:58 [INFO] [stdout] | [INFO] [stdout] 38 | elf.sections().map(|section| section.validate()).collect::>()?; [INFO] [stdout] | ^^^^^^^ ------------------- type must be known at this point [INFO] [stdout] | | [INFO] [stdout] | cannot infer type of the type parameter `B` declared on the method `collect` [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: FromIterator<()>` [INFO] [stdout] = note: required for `Result<_, ElfError>` to implement `FromIterator>` [INFO] [stdout] note: required by a bound in `collect` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/core/src/iter/traits/iterator.rs:1999:5 [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 38 | elf.sections().map(|section| section.validate()).collect::>()?; [INFO] [stdout] | ~~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/lib.rs:38:58 [INFO] [stdout] | [INFO] [stdout] 38 | elf.sections().map(|section| section.validate()).collect::>()?; [INFO] [stdout] | ^^^^^^^ ------------------- type must be known at this point [INFO] [stdout] | | [INFO] [stdout] | cannot infer type of the type parameter `B` declared on the method `collect` [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: FromIterator<()>` [INFO] [stdout] = note: required for `Result<_, ElfError>` to implement `FromIterator>` [INFO] [stdout] note: required by a bound in `collect` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/core/src/iter/traits/iterator.rs:1999:5 [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 38 | elf.sections().map(|section| section.validate()).collect::>()?; [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] [stderr] error: could not compile `mer` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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 `mer` (lib test) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "a327e2548374efc9bac48cdb91b9e7ccfa0f18a5c3c2d7532a83c7b384676844", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a327e2548374efc9bac48cdb91b9e7ccfa0f18a5c3c2d7532a83c7b384676844", kill_on_drop: false }` [INFO] [stdout] a327e2548374efc9bac48cdb91b9e7ccfa0f18a5c3c2d7532a83c7b384676844