[INFO] cloning repository https://github.com/ganpori/atcoder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganpori/atcoder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganpori%2Fatcoder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganpori%2Fatcoder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd7cb6806d37ba03c203d2d37495730bd23289d6
[INFO] checking ganpori/atcoder against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganpori%2Fatcoder" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ganpori/atcoder on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ganpori/atcoder
[INFO] finished tweaking git repo https://github.com/ganpori/atcoder
[INFO] tweaked toml for git repo https://github.com/ganpori/atcoder written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ganpori/atcoder 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded term_size v1.0.0-beta.2
[INFO] [stderr]   Downloaded proconio v0.4.5
[INFO] [stderr]   Downloaded rpassword v5.0.1
[INFO] [stderr]   Downloaded opener v0.4.1
[INFO] [stderr]   Downloaded snowchains_core v0.13.2
[INFO] [stderr]   Downloaded serde_ignored v0.1.10
[INFO] [stderr]   Downloaded liquid-derive v0.22.0
[INFO] [stderr]   Downloaded cfg-expr v0.7.4
[INFO] [stderr]   Downloaded liquid-lib v0.22.0
[INFO] [stderr]   Downloaded liquid v0.22.0
[INFO] [stderr]   Downloaded krates v0.7.0
[INFO] [stderr]   Downloaded liquid-core v0.22.0
[INFO] [stderr]   Downloaded h2 v0.3.23
[INFO] [stderr]   Downloaded cargo-compete v0.10.6
[INFO] [stderr]   Downloaded proc-quote v0.3.2
[INFO] [stderr]   Downloaded libz-sys v1.1.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebb8750ff7fc61c5ead9b4c3e47c77a6bb67084ae7515ffb203a5640d5733160
[INFO] running `Command { std: "docker" "start" "-a" "ebb8750ff7fc61c5ead9b4c3e47c77a6bb67084ae7515ffb203a5640d5733160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebb8750ff7fc61c5ead9b4c3e47c77a6bb67084ae7515ffb203a5640d5733160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebb8750ff7fc61c5ead9b4c3e47c77a6bb67084ae7515ffb203a5640d5733160", kill_on_drop: false }`
[INFO] [stdout] ebb8750ff7fc61c5ead9b4c3e47c77a6bb67084ae7515ffb203a5640d5733160
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ece25f1a4366d0430198a7e2c42c9506fc2ebb6e9c92ecd6193de1364a32526c
[INFO] running `Command { std: "docker" "start" "-a" "ece25f1a4366d0430198a7e2c42c9506fc2ebb6e9c92ecd6193de1364a32526c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
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[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling cssparser-macros v0.6.1
[INFO] [stderr]    Compiling phf_macros v0.8.0
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[INFO] [stderr]    Compiling liquid-derive v0.22.0
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling darling_macro v0.13.4
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[INFO] [stderr]     Checking structopt v0.3.26
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[INFO] [stderr]    Compiling pest_generator v2.7.6
[INFO] [stderr]     Checking h2 v0.3.23
[INFO] [stderr]    Compiling pest_derive v2.7.6
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]     Checking hyper v0.14.28
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[INFO] [stderr]     Checking serde_with v1.14.0
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[INFO] [stderr]     Checking liquid-core v0.22.0
[INFO] [stderr]     Checking cargo_metadata v0.13.1
[INFO] [stderr]     Checking cookie_store v0.12.0
[INFO] [stderr]     Checking liquid-lib v0.22.0
[INFO] [stderr]     Checking krates v0.7.0
[INFO] [stderr]     Checking hyper-rustls v0.24.2
[INFO] [stderr]     Checking reqwest v0.11.23
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[INFO] [stderr]     Checking snowchains_core v0.13.2
[INFO] [stderr]     Checking cargo-compete v0.10.6
[INFO] [stderr]     Checking atcoder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 |       n:usize,
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 |       n:usize,
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 20s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "ece25f1a4366d0430198a7e2c42c9506fc2ebb6e9c92ecd6193de1364a32526c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ece25f1a4366d0430198a7e2c42c9506fc2ebb6e9c92ecd6193de1364a32526c", kill_on_drop: false }`
[INFO] [stdout] ece25f1a4366d0430198a7e2c42c9506fc2ebb6e9c92ecd6193de1364a32526c
[INFO] checking ganpori/atcoder against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganpori%2Fatcoder" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ganpori/atcoder on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ganpori/atcoder
[INFO] finished tweaking git repo https://github.com/ganpori/atcoder
[INFO] tweaked toml for git repo https://github.com/ganpori/atcoder written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ganpori/atcoder 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48dbf18e552d71ac4eca3bd9b84f6127ef16e2042fd9154765cdf4b8df0347d0
[INFO] running `Command { std: "docker" "start" "-a" "48dbf18e552d71ac4eca3bd9b84f6127ef16e2042fd9154765cdf4b8df0347d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48dbf18e552d71ac4eca3bd9b84f6127ef16e2042fd9154765cdf4b8df0347d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48dbf18e552d71ac4eca3bd9b84f6127ef16e2042fd9154765cdf4b8df0347d0", kill_on_drop: false }`
[INFO] [stdout] 48dbf18e552d71ac4eca3bd9b84f6127ef16e2042fd9154765cdf4b8df0347d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7754dd99d0e16e2b6e311f60b2999d281735dbe13cf82221a57c48813320dcaf
[INFO] running `Command { std: "docker" "start" "-a" "7754dd99d0e16e2b6e311f60b2999d281735dbe13cf82221a57c48813320dcaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling libc v0.2.152
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[INFO] [stderr]    Compiling libssh2-sys v0.2.23
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[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
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[INFO] [stderr]     Checking termcolor v1.4.1
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[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking num v0.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling cssparser-macros v0.6.1
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling proc-quote v0.3.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling html5ever v0.25.2
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling liquid-derive v0.22.0
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking pest v2.7.6
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling serde_with_macros v1.5.2
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling pest_meta v2.7.6
[INFO] [stderr]     Checking semver-parser v0.10.2
[INFO] [stderr]     Checking h2 v0.3.23
[INFO] [stderr]    Compiling pest_generator v2.7.6
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]    Compiling pest_derive v2.7.6
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking kstring v1.0.6
[INFO] [stderr]     Checking string_cache v0.8.7
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking cargo-platform v0.1.6
[INFO] [stderr]     Checking humantime-serde v1.1.1
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking serde_ignored v0.1.10
[INFO] [stderr]     Checking serde_with v1.14.0
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking toml_edit v0.8.0
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking prettytable-rs v0.10.0
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking publicsuffix v1.5.6
[INFO] [stderr]     Checking git2 v0.13.25
[INFO] [stderr]     Checking cookie_store v0.12.0
[INFO] [stderr]     Checking cargo_metadata v0.13.1
[INFO] [stderr]     Checking liquid-core v0.22.0
[INFO] [stderr]     Checking scraper v0.12.0
[INFO] [stderr]     Checking krates v0.7.0
[INFO] [stderr]     Checking liquid-lib v0.22.0
[INFO] [stderr]     Checking hyper-rustls v0.24.2
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[INFO] [stderr]     Checking liquid v0.22.0
[INFO] [stderr]     Checking snowchains_core v0.13.2
[INFO] [stderr]     Checking cargo-compete v0.10.6
[INFO] [stderr]     Checking atcoder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 |       n:usize,
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 |       n:usize,
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 08s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "7754dd99d0e16e2b6e311f60b2999d281735dbe13cf82221a57c48813320dcaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7754dd99d0e16e2b6e311f60b2999d281735dbe13cf82221a57c48813320dcaf", kill_on_drop: false }`
[INFO] [stdout] 7754dd99d0e16e2b6e311f60b2999d281735dbe13cf82221a57c48813320dcaf