[INFO] cloning repository https://github.com/tamanishi/measure_air_quality
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tamanishi/measure_air_quality" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamanishi%2Fmeasure_air_quality", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamanishi%2Fmeasure_air_quality'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f36e83bd660a91f573802c0d27028acfd3d5a174
[INFO] checking tamanishi/measure_air_quality against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamanishi%2Fmeasure_air_quality" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tamanishi/measure_air_quality 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 git repo https://github.com/tamanishi/measure_air_quality
[INFO] finished tweaking git repo https://github.com/tamanishi/measure_air_quality
[INFO] tweaked toml for git repo https://github.com/tamanishi/measure_air_quality written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tamanishi/measure_air_quality 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 scd4x v0.2.1
[INFO] [stderr]   Downloaded sensirion-i2c v0.1.1
[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] 8ccdb717ecfd471e151744775826bc988991dfaa611c9f24125be7de4b2f3abe
[INFO] running `Command { std: "docker" "start" "-a" "8ccdb717ecfd471e151744775826bc988991dfaa611c9f24125be7de4b2f3abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ccdb717ecfd471e151744775826bc988991dfaa611c9f24125be7de4b2f3abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ccdb717ecfd471e151744775826bc988991dfaa611c9f24125be7de4b2f3abe", kill_on_drop: false }`
[INFO] [stdout] 8ccdb717ecfd471e151744775826bc988991dfaa611c9f24125be7de4b2f3abe
[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] e893e434dce10d7743d84c915ffef443bc4a1019f8a3a4316f71d582ea3b483a
[INFO] running `Command { std: "docker" "start" "-a" "e893e434dce10d7743d84c915ffef443bc4a1019f8a3a4316f71d582ea3b483a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking embedded-hal v0.2.6
[INFO] [stderr]     Checking sensirion-i2c v0.1.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking scd4x v0.2.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking i2cdev v0.5.1
[INFO] [stderr]     Checking gpio-cdev v0.5.1
[INFO] [stderr]     Checking spidev v0.5.1
[INFO] [stderr]     Checking sysfs_gpio v0.6.1
[INFO] [stderr]     Checking linux-embedded-hal v0.3.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking measure_air_quality v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.42s
[INFO] running `Command { std: "docker" "inspect" "e893e434dce10d7743d84c915ffef443bc4a1019f8a3a4316f71d582ea3b483a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e893e434dce10d7743d84c915ffef443bc4a1019f8a3a4316f71d582ea3b483a", kill_on_drop: false }`
[INFO] [stdout] e893e434dce10d7743d84c915ffef443bc4a1019f8a3a4316f71d582ea3b483a
[INFO] checking tamanishi/measure_air_quality against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamanishi%2Fmeasure_air_quality" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tamanishi/measure_air_quality 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 git repo https://github.com/tamanishi/measure_air_quality
[INFO] finished tweaking git repo https://github.com/tamanishi/measure_air_quality
[INFO] tweaked toml for git repo https://github.com/tamanishi/measure_air_quality written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tamanishi/measure_air_quality 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] [stderr]     Blocking waiting for file lock on package cache
[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] cdbeaaa7793b4ef0d4ee322a620e108eeccd2088b872b6c0a22d24bddc713040
[INFO] running `Command { std: "docker" "start" "-a" "cdbeaaa7793b4ef0d4ee322a620e108eeccd2088b872b6c0a22d24bddc713040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdbeaaa7793b4ef0d4ee322a620e108eeccd2088b872b6c0a22d24bddc713040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdbeaaa7793b4ef0d4ee322a620e108eeccd2088b872b6c0a22d24bddc713040", kill_on_drop: false }`
[INFO] [stdout] cdbeaaa7793b4ef0d4ee322a620e108eeccd2088b872b6c0a22d24bddc713040
[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] 3aee6308c565cb5ed9be2e999613a900705c0f539959fa1fe0d4f06f29ffbb71
[INFO] running `Command { std: "docker" "start" "-a" "3aee6308c565cb5ed9be2e999613a900705c0f539959fa1fe0d4f06f29ffbb71", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking embedded-hal v0.2.6
[INFO] [stderr]     Checking sensirion-i2c v0.1.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking scd4x v0.2.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking spidev v0.5.1
[INFO] [stderr]     Checking gpio-cdev v0.5.1
[INFO] [stderr]     Checking i2cdev v0.5.1
[INFO] [stderr]     Checking sysfs_gpio v0.6.1
[INFO] [stderr]     Checking linux-embedded-hal v0.3.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/chrono-0.4.19/src/format/parse.rs:491:21
[INFO] [stdout]     |
[INFO] [stdout] 491 |                     Err(INVALID)?;
[INFO] [stdout]     |                     ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 491 |                     Err::<T, format::ParseError>(INVALID)?;
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chrono` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3aee6308c565cb5ed9be2e999613a900705c0f539959fa1fe0d4f06f29ffbb71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aee6308c565cb5ed9be2e999613a900705c0f539959fa1fe0d4f06f29ffbb71", kill_on_drop: false }`
[INFO] [stdout] 3aee6308c565cb5ed9be2e999613a900705c0f539959fa1fe0d4f06f29ffbb71