[INFO] cloning repository https://github.com/CharlieBlocks/fractal-flake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CharlieBlocks/fractal-flake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharlieBlocks%2Ffractal-flake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharlieBlocks%2Ffractal-flake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eded30e434dfb0e23e4c8984dc0a748b784836b3
[INFO] checking CharlieBlocks/fractal-flake against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharlieBlocks%2Ffractal-flake" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CharlieBlocks/fractal-flake 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/CharlieBlocks/fractal-flake
[INFO] finished tweaking git repo https://github.com/CharlieBlocks/fractal-flake
[INFO] tweaked toml for git repo https://github.com/CharlieBlocks/fractal-flake written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CharlieBlocks/fractal-flake 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]  Downloading crates ...
[INFO] [stderr]   Downloaded pkg-config v0.3.29
[INFO] [stderr]   Downloaded thread-id v4.2.1
[INFO] [stderr]   Downloaded sluice v0.5.5
[INFO] [stderr]   Downloaded castaway v0.1.2
[INFO] [stderr]   Downloaded isahc v1.7.2
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.9+1.58.0
[INFO] [stderr]   Downloaded curl-sys v0.4.70+curl-8.5.0
[INFO] [stderr]   Downloaded libz-sys v1.1.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 287c5f83e2e12a5a08ab443e4113d8b8e62aeab46e5b77d4bf241441af4cbce4
[INFO] running `Command { std: "docker" "start" "-a" "287c5f83e2e12a5a08ab443e4113d8b8e62aeab46e5b77d4bf241441af4cbce4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "287c5f83e2e12a5a08ab443e4113d8b8e62aeab46e5b77d4bf241441af4cbce4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "287c5f83e2e12a5a08ab443e4113d8b8e62aeab46e5b77d4bf241441af4cbce4", kill_on_drop: false }`
[INFO] [stdout] 287c5f83e2e12a5a08ab443e4113d8b8e62aeab46e5b77d4bf241441af4cbce4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 588fb545c7e2d82720999b51aa4094007ae264024b7a88f5ac8ed45091add91f
[INFO] running `Command { std: "docker" "start" "-a" "588fb545c7e2d82720999b51aa4094007ae264024b7a88f5ac8ed45091add91f", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.9+1.58.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling curl v0.4.44
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]    Compiling isahc v1.7.2
[INFO] [stderr]     Checking http v0.2.11
[INFO] [stderr]     Checking polling v2.8.0
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking castaway v0.1.2
[INFO] [stderr]    Compiling libz-sys v1.1.14
[INFO] [stderr]    Compiling openssl-sys v0.9.98
[INFO] [stderr]    Compiling curl-sys v0.4.70+curl-8.5.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking thread-id v4.2.1
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking fractal_flake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.39s
[INFO] running `Command { std: "docker" "inspect" "588fb545c7e2d82720999b51aa4094007ae264024b7a88f5ac8ed45091add91f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "588fb545c7e2d82720999b51aa4094007ae264024b7a88f5ac8ed45091add91f", kill_on_drop: false }`
[INFO] [stdout] 588fb545c7e2d82720999b51aa4094007ae264024b7a88f5ac8ed45091add91f
[INFO] checking CharlieBlocks/fractal-flake against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharlieBlocks%2Ffractal-flake" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CharlieBlocks/fractal-flake 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/CharlieBlocks/fractal-flake
[INFO] finished tweaking git repo https://github.com/CharlieBlocks/fractal-flake
[INFO] tweaked toml for git repo https://github.com/CharlieBlocks/fractal-flake written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/CharlieBlocks/fractal-flake 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 913671b8872c8fc91e8da47e571b8f6073f68d6b302f21a36f1d5d2b6aab9a09
[INFO] running `Command { std: "docker" "start" "-a" "913671b8872c8fc91e8da47e571b8f6073f68d6b302f21a36f1d5d2b6aab9a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "913671b8872c8fc91e8da47e571b8f6073f68d6b302f21a36f1d5d2b6aab9a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "913671b8872c8fc91e8da47e571b8f6073f68d6b302f21a36f1d5d2b6aab9a09", kill_on_drop: false }`
[INFO] [stdout] 913671b8872c8fc91e8da47e571b8f6073f68d6b302f21a36f1d5d2b6aab9a09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8773187b18a74d5d7f4b95083825e1d4def0d74bd98293f36e2c2fbf932da93c
[INFO] running `Command { std: "docker" "start" "-a" "8773187b18a74d5d7f4b95083825e1d4def0d74bd98293f36e2c2fbf932da93c", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.9+1.58.0
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling curl v0.4.44
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]    Compiling isahc v1.7.2
[INFO] [stderr]     Checking http v0.2.11
[INFO] [stderr]     Checking polling v2.8.0
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking castaway v0.1.2
[INFO] [stderr]     Checking thread-id v4.2.1
[INFO] [stderr]    Compiling openssl-sys v0.9.98
[INFO] [stderr]    Compiling libz-sys v1.1.14
[INFO] [stderr]    Compiling curl-sys v0.4.70+curl-8.5.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking fractal_flake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.60s
[INFO] running `Command { std: "docker" "inspect" "8773187b18a74d5d7f4b95083825e1d4def0d74bd98293f36e2c2fbf932da93c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8773187b18a74d5d7f4b95083825e1d4def0d74bd98293f36e2c2fbf932da93c", kill_on_drop: false }`
[INFO] [stdout] 8773187b18a74d5d7f4b95083825e1d4def0d74bd98293f36e2c2fbf932da93c