[INFO] cloning repository https://github.com/Trainjumper1/rusty_matrix
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Trainjumper1/rusty_matrix" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrainjumper1%2Frusty_matrix", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrainjumper1%2Frusty_matrix'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07ace65c2cdd8b36c5188ed50184282c2136c34b
[INFO] checking Trainjumper1/rusty_matrix against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrainjumper1%2Frusty_matrix" "/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/Trainjumper1/rusty_matrix 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/Trainjumper1/rusty_matrix
[INFO] finished tweaking git repo https://github.com/Trainjumper1/rusty_matrix
[INFO] tweaked toml for git repo https://github.com/Trainjumper1/rusty_matrix written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Trainjumper1/rusty_matrix 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded minifb v0.25.0
[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] 7c9c8cf3cdee85dd9183e7e9d4ace8da1f085cd3ef701e230463d9ab5e0d18ba
[INFO] running `Command { std: "docker" "start" "-a" "7c9c8cf3cdee85dd9183e7e9d4ace8da1f085cd3ef701e230463d9ab5e0d18ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c9c8cf3cdee85dd9183e7e9d4ace8da1f085cd3ef701e230463d9ab5e0d18ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c9c8cf3cdee85dd9183e7e9d4ace8da1f085cd3ef701e230463d9ab5e0d18ba", kill_on_drop: false }`
[INFO] [stdout] 7c9c8cf3cdee85dd9183e7e9d4ace8da1f085cd3ef701e230463d9ab5e0d18ba
[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] 90e025b701aa03971cfd8d88f6f5c478743ea47a9499ca8e05c16b62af85802d
[INFO] running `Command { std: "docker" "start" "-a" "90e025b701aa03971cfd8d88f6f5c478743ea47a9499ca8e05c16b62af85802d", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]    Compiling xml-rs v0.8.19
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking libloading v0.8.1
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking indexmap v2.2.3
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking data-types v0.1.0 (/opt/rustwide/workdir/training/chapter-3/data-types)
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking functions v0.1.0 (/opt/rustwide/workdir/training/chapter-3/functions)
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir/training/chapter-1/hello_cargo)
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]     Checking wayland-commons v0.29.5
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir/training/chapter-2/guessing_game)
[INFO] [stderr]     Checking http-body-util v0.1.0
[INFO] [stderr]    Compiling minifb v0.25.0
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.4
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking wayland-cursor v0.29.5
[INFO] [stderr]     Checking pin-project v1.1.4
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking h2 v0.4.2
[INFO] [stderr]     Checking hyper v1.1.0
[INFO] [stderr]     Checking hyper-util v0.1.3
[INFO] [stderr]     Checking special v0.1.0 (/opt/rustwide/workdir/extra/special)
[INFO] [stderr]     Checking rusty_matrix v0.1.0 (/opt/rustwide/workdir/app)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.57s
[INFO] running `Command { std: "docker" "inspect" "90e025b701aa03971cfd8d88f6f5c478743ea47a9499ca8e05c16b62af85802d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90e025b701aa03971cfd8d88f6f5c478743ea47a9499ca8e05c16b62af85802d", kill_on_drop: false }`
[INFO] [stdout] 90e025b701aa03971cfd8d88f6f5c478743ea47a9499ca8e05c16b62af85802d
[INFO] checking Trainjumper1/rusty_matrix against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrainjumper1%2Frusty_matrix" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Trainjumper1/rusty_matrix 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/Trainjumper1/rusty_matrix
[INFO] finished tweaking git repo https://github.com/Trainjumper1/rusty_matrix
[INFO] tweaked toml for git repo https://github.com/Trainjumper1/rusty_matrix written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Trainjumper1/rusty_matrix 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd6976476e1c871c202c8e8e97b39b5054b9806257b00d9ac2db9724a4adc896
[INFO] running `Command { std: "docker" "start" "-a" "cd6976476e1c871c202c8e8e97b39b5054b9806257b00d9ac2db9724a4adc896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd6976476e1c871c202c8e8e97b39b5054b9806257b00d9ac2db9724a4adc896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd6976476e1c871c202c8e8e97b39b5054b9806257b00d9ac2db9724a4adc896", kill_on_drop: false }`
[INFO] [stdout] cd6976476e1c871c202c8e8e97b39b5054b9806257b00d9ac2db9724a4adc896
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d1f988dd9a238350993734267b9494ad517c332dbb420c041ed06ad294f00d7
[INFO] running `Command { std: "docker" "start" "-a" "2d1f988dd9a238350993734267b9494ad517c332dbb420c041ed06ad294f00d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]    Compiling xml-rs v0.8.19
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking libloading v0.8.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking indexmap v2.2.3
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking tempfile v3.10.0
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir/training/chapter-1/hello_cargo)
[INFO] [stderr]     Checking functions v0.1.0 (/opt/rustwide/workdir/training/chapter-3/functions)
[INFO] [stderr]     Checking data-types v0.1.0 (/opt/rustwide/workdir/training/chapter-3/data-types)
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]     Checking wayland-commons v0.29.5
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir/training/chapter-2/guessing_game)
[INFO] [stderr]    Compiling minifb v0.25.0
[INFO] [stderr]     Checking http-body-util v0.1.0
[INFO] [stderr]     Checking wayland-cursor v0.29.5
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.4
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking pin-project v1.1.4
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking h2 v0.4.2
[INFO] [stderr]     Checking hyper v1.1.0
[INFO] [stderr]     Checking special v0.1.0 (/opt/rustwide/workdir/extra/special)
[INFO] [stderr]     Checking hyper-util v0.1.3
[INFO] [stderr]     Checking rusty_matrix v0.1.0 (/opt/rustwide/workdir/app)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.63s
[INFO] running `Command { std: "docker" "inspect" "2d1f988dd9a238350993734267b9494ad517c332dbb420c041ed06ad294f00d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d1f988dd9a238350993734267b9494ad517c332dbb420c041ed06ad294f00d7", kill_on_drop: false }`
[INFO] [stdout] 2d1f988dd9a238350993734267b9494ad517c332dbb420c041ed06ad294f00d7