[INFO] cloning repository https://github.com/okawak/MHV4_monitor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/okawak/MHV4_monitor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fokawak%2FMHV4_monitor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fokawak%2FMHV4_monitor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11be475b6faeaa6900fe0cab647190466bb0bbfc
[INFO] checking okawak/MHV4_monitor against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fokawak%2FMHV4_monitor" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/okawak/MHV4_monitor 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/okawak/MHV4_monitor
[INFO] finished tweaking git repo https://github.com/okawak/MHV4_monitor
[INFO] tweaked toml for git repo https://github.com/okawak/MHV4_monitor written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 168 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding env_logger v0.7.1 (latest: v0.11.3)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding h2 v0.3.26 (latest: v0.4.4)
[INFO] [stderr]       Adding headers v0.3.9 (latest: v0.4.0)
[INFO] [stderr]       Adding headers-core v0.2.0 (latest: v0.3.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding http-body v0.4.6 (latest: v1.0.0)
[INFO] [stderr]       Adding humantime v1.3.0 (latest: v2.1.0)
[INFO] [stderr]       Adding hyper v0.14.28 (latest: v1.2.0)
[INFO] [stderr]       Adding multer v2.1.0 (latest: v3.0.0)
[INFO] [stderr]       Adding nix v0.26.4 (latest: v0.28.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding pretty_env_logger v0.4.0 (latest: v0.5.0)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9c5f8c9ae54a87d0b3e393d9c99b4824ca73c1c1566ab098289742659b56026b
[INFO] running `Command { std: "docker" "start" "-a" "9c5f8c9ae54a87d0b3e393d9c99b4824ca73c1c1566ab098289742659b56026b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c5f8c9ae54a87d0b3e393d9c99b4824ca73c1c1566ab098289742659b56026b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c5f8c9ae54a87d0b3e393d9c99b4824ca73c1c1566ab098289742659b56026b", kill_on_drop: false }`
[INFO] [stdout] 9c5f8c9ae54a87d0b3e393d9c99b4824ca73c1c1566ab098289742659b56026b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] cc70bb71d6860d4128c8a7976be3ad62dc9170ca0e3cec045f295695d01affaf
[INFO] running `Command { std: "docker" "start" "-a" "cc70bb71d6860d4128c8a7976be3ad62dc9170ca0e3cec045f295695d01affaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling multer v2.1.0
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking data-encoding v2.5.0
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking getrandom v0.2.13
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking try-lock v0.2.5
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking headers v0.3.9
[INFO] [stderr]     Checking clap_builder v4.5.2
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tungstenite v0.21.0
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking unescaper v0.1.4
[INFO] [stderr]     Checking serialport v4.3.0
[INFO] [stderr]     Checking clap v4.5.4
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-tungstenite v0.21.0
[INFO] [stderr]     Checking tokio-stream v0.1.15
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking warp v0.3.7
[INFO] [stderr]     Checking mhv4_monitor v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::result::Result;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Result` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::result::Result;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Result` is already defined 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 57.59s
[INFO] running `Command { std: "docker" "inspect" "cc70bb71d6860d4128c8a7976be3ad62dc9170ca0e3cec045f295695d01affaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc70bb71d6860d4128c8a7976be3ad62dc9170ca0e3cec045f295695d01affaf", kill_on_drop: false }`
[INFO] [stdout] cc70bb71d6860d4128c8a7976be3ad62dc9170ca0e3cec045f295695d01affaf