[INFO] cloning repository https://github.com/chazkiker2/grrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chazkiker2/grrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchazkiker2%2Fgrrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchazkiker2%2Fgrrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff6da5f709d6e55128d0f6b85be9fac4a7803840
[INFO] checking chazkiker2/grrs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchazkiker2%2Fgrrs" "/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/chazkiker2/grrs 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/chazkiker2/grrs
[INFO] finished tweaking git repo https://github.com/chazkiker2/grrs
[INFO] tweaked toml for git repo https://github.com/chazkiker2/grrs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/chazkiker2/grrs 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] 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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ddea4b955526ee917de06d1760d711e88ef32841828d0a02618706d7503c81c
[INFO] running `Command { std: "docker" "start" "-a" "0ddea4b955526ee917de06d1760d711e88ef32841828d0a02618706d7503c81c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ddea4b955526ee917de06d1760d711e88ef32841828d0a02618706d7503c81c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ddea4b955526ee917de06d1760d711e88ef32841828d0a02618706d7503c81c", kill_on_drop: false }`
[INFO] [stdout] 0ddea4b955526ee917de06d1760d711e88ef32841828d0a02618706d7503c81c
[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=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] a2b5263b97ae85aedfd205f36cd00237cb58265f86e966b1119ce0ed83ec03f0
[INFO] running `Command { std: "docker" "start" "-a" "a2b5263b97ae85aedfd205f36cd00237cb58265f86e966b1119ce0ed83ec03f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking grrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:44
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, BufReader, prelude::*, Write};
[INFO] [stdout]   |                                ----------  ^^^^^
[INFO] [stdout]   |                                |
[INFO] [stdout]   |                                the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:44
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, BufReader, prelude::*, Write};
[INFO] [stdout]   |                                ----------  ^^^^^
[INFO] [stdout]   |                                |
[INFO] [stdout]   |                                the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.59s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a2b5263b97ae85aedfd205f36cd00237cb58265f86e966b1119ce0ed83ec03f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2b5263b97ae85aedfd205f36cd00237cb58265f86e966b1119ce0ed83ec03f0", kill_on_drop: false }`
[INFO] [stdout] a2b5263b97ae85aedfd205f36cd00237cb58265f86e966b1119ce0ed83ec03f0
[INFO] checking chazkiker2/grrs against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchazkiker2%2Fgrrs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chazkiker2/grrs 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/chazkiker2/grrs
[INFO] finished tweaking git repo https://github.com/chazkiker2/grrs
[INFO] tweaked toml for git repo https://github.com/chazkiker2/grrs written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/chazkiker2/grrs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7ebb046cda9e61d4ed6e936075362205ded93f4b54f873611575ec18a07765a7
[INFO] running `Command { std: "docker" "start" "-a" "7ebb046cda9e61d4ed6e936075362205ded93f4b54f873611575ec18a07765a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ebb046cda9e61d4ed6e936075362205ded93f4b54f873611575ec18a07765a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ebb046cda9e61d4ed6e936075362205ded93f4b54f873611575ec18a07765a7", kill_on_drop: false }`
[INFO] [stdout] 7ebb046cda9e61d4ed6e936075362205ded93f4b54f873611575ec18a07765a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5b1e97a6947e398883ecdcbce8d4b9c9efa87b6d210ae7700d52d319afa609b6
[INFO] running `Command { std: "docker" "start" "-a" "5b1e97a6947e398883ecdcbce8d4b9c9efa87b6d210ae7700d52d319afa609b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking grrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:44
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, BufReader, prelude::*, Write};
[INFO] [stdout]   |                                ----------  ^^^^^
[INFO] [stdout]   |                                |
[INFO] [stdout]   |                                the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:44
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, BufReader, prelude::*, Write};
[INFO] [stdout]   |                                ----------  ^^^^^
[INFO] [stdout]   |                                |
[INFO] [stdout]   |                                the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 10.44s
[INFO] running `Command { std: "docker" "inspect" "5b1e97a6947e398883ecdcbce8d4b9c9efa87b6d210ae7700d52d319afa609b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b1e97a6947e398883ecdcbce8d4b9c9efa87b6d210ae7700d52d319afa609b6", kill_on_drop: false }`
[INFO] [stdout] 5b1e97a6947e398883ecdcbce8d4b9c9efa87b6d210ae7700d52d319afa609b6