[INFO] cloning repository https://github.com/homura10059/AtCoder_Problems_Boot_Camp_for_Beginners
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/homura10059/AtCoder_Problems_Boot_Camp_for_Beginners" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhomura10059%2FAtCoder_Problems_Boot_Camp_for_Beginners", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhomura10059%2FAtCoder_Problems_Boot_Camp_for_Beginners'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] daec9dc639631915fa2c3c0f9f991d174eee5301
[INFO] checking homura10059/AtCoder_Problems_Boot_Camp_for_Beginners against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhomura10059%2FAtCoder_Problems_Boot_Camp_for_Beginners" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/homura10059/AtCoder_Problems_Boot_Camp_for_Beginners on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/homura10059/AtCoder_Problems_Boot_Camp_for_Beginners
[INFO] finished tweaking git repo https://github.com/homura10059/AtCoder_Problems_Boot_Camp_for_Beginners
[INFO] tweaked toml for git repo https://github.com/homura10059/AtCoder_Problems_Boot_Camp_for_Beginners written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/homura10059/AtCoder_Problems_Boot_Camp_for_Beginners 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cli_test_dir v0.1.7
[INFO] [stderr]   Downloaded matrixmultiply v0.2.4
[INFO] [stderr]   Downloaded parameterized-macro v1.0.1
[INFO] [stderr]   Downloaded parameterized v1.0.1
[INFO] [stderr]   Downloaded ndarray v0.13.0
[INFO] [stderr]   Downloaded proconio v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4887501a74fa5c5d16b414e83c09320d4919d05d1a15d626d635eeaf285d47d6
[INFO] running `Command { std: "docker" "start" "-a" "4887501a74fa5c5d16b414e83c09320d4919d05d1a15d626d635eeaf285d47d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4887501a74fa5c5d16b414e83c09320d4919d05d1a15d626d635eeaf285d47d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4887501a74fa5c5d16b414e83c09320d4919d05d1a15d626d635eeaf285d47d6", kill_on_drop: false }`
[INFO] [stdout] 4887501a74fa5c5d16b414e83c09320d4919d05d1a15d626d635eeaf285d47d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef17b8c115b32435d13a3f8f72a87e8b0ef91a3e53094447efd64206dd671d6e
[INFO] running `Command { std: "docker" "start" "-a" "ef17b8c115b32435d13a3f8f72a87e8b0ef91a3e53094447efd64206dd671d6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking cli_test_dir v0.1.7
[INFO] [stderr]     Checking proconio v0.4.3
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]    Compiling serde v1.0.185
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking b_power_socket v0.1.0 (/opt/rustwide/workdir/easy100/b_power_socket)
[INFO] [stderr]     Checking b_tax_rate v0.1.0 (/opt/rustwide/workdir/easy100/b_tax_rate)
[INFO] [stderr]     Checking b_qualification_simulator v0.1.0 (/opt/rustwide/workdir/easy100/b_qualification_simulator)
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking c_rally v0.1.0 (/opt/rustwide/workdir/easy100/c_rally)
[INFO] [stderr]     Checking b_can_you_solve_this v0.1.0 (/opt/rustwide/workdir/easy100/b_can_you_solve_this)
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ef17b8c115b32435d13a3f8f72a87e8b0ef91a3e53094447efd64206dd671d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef17b8c115b32435d13a3f8f72a87e8b0ef91a3e53094447efd64206dd671d6e", kill_on_drop: false }`
[INFO] [stdout] ef17b8c115b32435d13a3f8f72a87e8b0ef91a3e53094447efd64206dd671d6e