[INFO] cloning repository https://github.com/erikjohnston/synapse-find-unreferenced-state-groups
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erikjohnston/synapse-find-unreferenced-state-groups" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Fsynapse-find-unreferenced-state-groups", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Fsynapse-find-unreferenced-state-groups'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e873f9a721e9a3a297ddf4299396cbf11d972b4d
[INFO] checking erikjohnston/synapse-find-unreferenced-state-groups against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Fsynapse-find-unreferenced-state-groups" "/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/erikjohnston/synapse-find-unreferenced-state-groups 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/erikjohnston/synapse-find-unreferenced-state-groups
[INFO] finished tweaking git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups
[INFO] tweaked toml for git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups 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 postgres v0.19.2
[INFO] [stderr]   Downloaded md-5 v0.10.0
[INFO] [stderr]   Downloaded siphasher v0.3.9
[INFO] [stderr]   Downloaded postgres-protocol v0.6.3
[INFO] [stderr]   Downloaded block-buffer v0.10.1
[INFO] [stderr]   Downloaded hmac v0.12.0
[INFO] [stderr]   Downloaded postgres-types v0.2.2
[INFO] [stderr]   Downloaded tokio-postgres v0.7.5
[INFO] [stderr]   Downloaded clap v3.0.14
[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] b8f49a11794c5ccb17ce96f609fc3717a177059956db761e3d5d356a22241519
[INFO] running `Command { std: "docker" "start" "-a" "b8f49a11794c5ccb17ce96f609fc3717a177059956db761e3d5d356a22241519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8f49a11794c5ccb17ce96f609fc3717a177059956db761e3d5d356a22241519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8f49a11794c5ccb17ce96f609fc3717a177059956db761e3d5d356a22241519", kill_on_drop: false }`
[INFO] [stdout] b8f49a11794c5ccb17ce96f609fc3717a177059956db761e3d5d356a22241519
[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] e24c8df5ea7c7f510699d3c2963833708fee86aad668b93dca5a2b5ce125963f
[INFO] running `Command { std: "docker" "start" "-a" "e24c8df5ea7c7f510699d3c2963833708fee86aad668b93dca5a2b5ce125963f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking siphasher v0.3.9
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking clap v3.0.14
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking tokio v1.16.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking crypto-common v0.1.1
[INFO] [stderr]     Checking block-buffer v0.10.1
[INFO] [stderr]     Checking digest v0.10.1
[INFO] [stderr]     Checking sha2 v0.10.1
[INFO] [stderr]     Checking hmac v0.12.0
[INFO] [stderr]     Checking md-5 v0.10.0
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]     Checking postgres-protocol v0.6.3
[INFO] [stderr]     Checking postgres-types v0.2.2
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-postgres v0.7.5
[INFO] [stderr]     Checking postgres v0.19.2
[INFO] [stderr]     Checking rust-synapse-find-unreferenced-state-groups v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.18s
[INFO] running `Command { std: "docker" "inspect" "e24c8df5ea7c7f510699d3c2963833708fee86aad668b93dca5a2b5ce125963f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e24c8df5ea7c7f510699d3c2963833708fee86aad668b93dca5a2b5ce125963f", kill_on_drop: false }`
[INFO] [stdout] e24c8df5ea7c7f510699d3c2963833708fee86aad668b93dca5a2b5ce125963f
[INFO] checking erikjohnston/synapse-find-unreferenced-state-groups against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferikjohnston%2Fsynapse-find-unreferenced-state-groups" "/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/erikjohnston/synapse-find-unreferenced-state-groups 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/erikjohnston/synapse-find-unreferenced-state-groups
[INFO] finished tweaking git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups
[INFO] tweaked toml for git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/erikjohnston/synapse-find-unreferenced-state-groups 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] 9f029cece8d849cb76f36312f635be5957bfb30e812754a5ef453ac2277bc2fc
[INFO] running `Command { std: "docker" "start" "-a" "9f029cece8d849cb76f36312f635be5957bfb30e812754a5ef453ac2277bc2fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f029cece8d849cb76f36312f635be5957bfb30e812754a5ef453ac2277bc2fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f029cece8d849cb76f36312f635be5957bfb30e812754a5ef453ac2277bc2fc", kill_on_drop: false }`
[INFO] [stdout] 9f029cece8d849cb76f36312f635be5957bfb30e812754a5ef453ac2277bc2fc
[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] 704168d959cedc8c0a548dda5eedc7563ef68e85e7ed84289bc0f76b6f24cadb
[INFO] running `Command { std: "docker" "start" "-a" "704168d959cedc8c0a548dda5eedc7563ef68e85e7ed84289bc0f76b6f24cadb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking siphasher v0.3.9
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.0.14
[INFO] [stderr]     Checking tokio v1.16.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking block-buffer v0.10.1
[INFO] [stderr]     Checking crypto-common v0.1.1
[INFO] [stderr]     Checking digest v0.10.1
[INFO] [stderr]     Checking hmac v0.12.0
[INFO] [stderr]     Checking sha2 v0.10.1
[INFO] [stderr]     Checking md-5 v0.10.0
[INFO] [stderr]     Checking postgres-protocol v0.6.3
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]     Checking postgres-types v0.2.2
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-postgres v0.7.5
[INFO] [stderr]     Checking postgres v0.19.2
[INFO] [stderr]     Checking rust-synapse-find-unreferenced-state-groups v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.27s
[INFO] running `Command { std: "docker" "inspect" "704168d959cedc8c0a548dda5eedc7563ef68e85e7ed84289bc0f76b6f24cadb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "704168d959cedc8c0a548dda5eedc7563ef68e85e7ed84289bc0f76b6f24cadb", kill_on_drop: false }`
[INFO] [stdout] 704168d959cedc8c0a548dda5eedc7563ef68e85e7ed84289bc0f76b6f24cadb