[INFO] fetching crate csv_perusal 0.6.2...
[INFO] checking csv_perusal-0.6.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate csv_perusal 0.6.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate csv_perusal 0.6.2 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 csv_perusal 0.6.2
[INFO] finished tweaking crates.io crate csv_perusal 0.6.2
[INFO] tweaked toml for crates.io crate csv_perusal 0.6.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate csv_perusal 0.6.2 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]  Downloading crates ...
[INFO] [stderr]   Downloaded csv v1.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2dc1779426b2879bfec465fa071b613db94aff097eb1ea87b7811a7253173075
[INFO] running `Command { std: "docker" "start" "-a" "2dc1779426b2879bfec465fa071b613db94aff097eb1ea87b7811a7253173075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dc1779426b2879bfec465fa071b613db94aff097eb1ea87b7811a7253173075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dc1779426b2879bfec465fa071b613db94aff097eb1ea87b7811a7253173075", kill_on_drop: false }`
[INFO] [stdout] 2dc1779426b2879bfec465fa071b613db94aff097eb1ea87b7811a7253173075
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8de34ab0882a00c65bcafae5a04765fae0e79aecd2084d2d52a6a9eac163afdd
[INFO] running `Command { std: "docker" "start" "-a" "8de34ab0882a00c65bcafae5a04765fae0e79aecd2084d2d52a6a9eac163afdd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking aho-corasick v1.1.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]     Checking regex-automata v0.3.9
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking regex v1.9.6
[INFO] [stderr]     Checking csv v1.2.2
[INFO] [stderr]     Checking csv_perusal v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.11s
[INFO] running `Command { std: "docker" "inspect" "8de34ab0882a00c65bcafae5a04765fae0e79aecd2084d2d52a6a9eac163afdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8de34ab0882a00c65bcafae5a04765fae0e79aecd2084d2d52a6a9eac163afdd", kill_on_drop: false }`
[INFO] [stdout] 8de34ab0882a00c65bcafae5a04765fae0e79aecd2084d2d52a6a9eac163afdd
[INFO] checking csv_perusal-0.6.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate csv_perusal 0.6.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate csv_perusal 0.6.2 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 csv_perusal 0.6.2
[INFO] finished tweaking crates.io crate csv_perusal 0.6.2
[INFO] tweaked toml for crates.io crate csv_perusal 0.6.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate csv_perusal 0.6.2 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 73c1cf619754dcefbbc804c1ed23c1e3a015a9a757d22aa940e7220779a22b7f
[INFO] running `Command { std: "docker" "start" "-a" "73c1cf619754dcefbbc804c1ed23c1e3a015a9a757d22aa940e7220779a22b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73c1cf619754dcefbbc804c1ed23c1e3a015a9a757d22aa940e7220779a22b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73c1cf619754dcefbbc804c1ed23c1e3a015a9a757d22aa940e7220779a22b7f", kill_on_drop: false }`
[INFO] [stdout] 73c1cf619754dcefbbc804c1ed23c1e3a015a9a757d22aa940e7220779a22b7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 47dc330cf5f6d6421358429012b4397d87426c45b24a1b9e43d2574a6009c49e
[INFO] running `Command { std: "docker" "start" "-a" "47dc330cf5f6d6421358429012b4397d87426c45b24a1b9e43d2574a6009c49e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking aho-corasick v1.1.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]     Checking regex-automata v0.3.9
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking regex v1.9.6
[INFO] [stderr]     Checking csv v1.2.2
[INFO] [stderr]     Checking csv_perusal v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]   --> src/open.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             return Ok(data)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]   --> src/open.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             return Ok(data)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ cannot satisfy `_ -> _`
[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 E0284`.
[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 E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `csv_perusal` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `csv_perusal` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "47dc330cf5f6d6421358429012b4397d87426c45b24a1b9e43d2574a6009c49e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47dc330cf5f6d6421358429012b4397d87426c45b24a1b9e43d2574a6009c49e", kill_on_drop: false }`
[INFO] [stdout] 47dc330cf5f6d6421358429012b4397d87426c45b24a1b9e43d2574a6009c49e