[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] 0af06ceeeaa24f2edea963de3ed8b02f3b79da32
[INFO] checking homura10059/AtCoder_Problems_Boot_Camp_for_Beginners against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[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-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/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-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/homura10059/AtCoder_Problems_Boot_Camp_for_Beginners on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2fb99bd2076fdadb3c2c38eb54a421902f3ca483719168fe02c4f8dacfc3dec
[INFO] running `Command { std: "docker" "start" "-a" "f2fb99bd2076fdadb3c2c38eb54a421902f3ca483719168fe02c4f8dacfc3dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2fb99bd2076fdadb3c2c38eb54a421902f3ca483719168fe02c4f8dacfc3dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2fb99bd2076fdadb3c2c38eb54a421902f3ca483719168fe02c4f8dacfc3dec", kill_on_drop: false }`
[INFO] [stdout] f2fb99bd2076fdadb3c2c38eb54a421902f3ca483719168fe02c4f8dacfc3dec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f9200f0ed4846ca24ead6a633b0ecad0dc45e3072fe79ffab736272b76d72ca
[INFO] running `Command { std: "docker" "start" "-a" "5f9200f0ed4846ca24ead6a633b0ecad0dc45e3072fe79ffab736272b76d72ca", 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 either v1.9.0
[INFO] [stderr]     Checking proconio v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde v1.0.185
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking b_qualification_simulator v0.1.0 (/opt/rustwide/workdir/easy100/b_qualification_simulator)
[INFO] [stderr]     Checking b_can_you_solve_this v0.1.0 (/opt/rustwide/workdir/easy100/b_can_you_solve_this)
[INFO] [stderr]     Checking b_tax_rate v0.1.0 (/opt/rustwide/workdir/easy100/b_tax_rate)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> easy100/b_qualification_simulator/src/main.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |         (n, a, b): (i32, i32, i32),
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking c_rally v0.1.0 (/opt/rustwide/workdir/easy100/c_rally)
[INFO] [stderr]     Checking b_power_socket v0.1.0 (/opt/rustwide/workdir/easy100/b_power_socket)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> easy100/b_qualification_simulator/src/main.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |         (n, a, b): (i32, i32, i32),
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5f9200f0ed4846ca24ead6a633b0ecad0dc45e3072fe79ffab736272b76d72ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f9200f0ed4846ca24ead6a633b0ecad0dc45e3072fe79ffab736272b76d72ca", kill_on_drop: false }`
[INFO] [stdout] 5f9200f0ed4846ca24ead6a633b0ecad0dc45e3072fe79ffab736272b76d72ca
