[INFO] fetching crate seed-keeper-core 0.3.2...
[INFO] checking seed-keeper-core-0.3.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate seed-keeper-core 0.3.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate seed-keeper-core 0.3.2 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 crates.io crate seed-keeper-core 0.3.2
[INFO] finished tweaking crates.io crate seed-keeper-core 0.3.2
[INFO] tweaked toml for crates.io crate seed-keeper-core 0.3.2 written to /workspace/builds/worker-4-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 33 packages
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded argon2 v0.5.3
[INFO] [stderr]   Downloaded password-hash v0.5.0
[INFO] [stderr]   Downloaded aes-kw v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 321a841468ef3f2566ddac18a38b89fc3a694bb2679710213de8a9c500f3903e
[INFO] running `Command { std: "docker" "start" "-a" "321a841468ef3f2566ddac18a38b89fc3a694bb2679710213de8a9c500f3903e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "321a841468ef3f2566ddac18a38b89fc3a694bb2679710213de8a9c500f3903e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "321a841468ef3f2566ddac18a38b89fc3a694bb2679710213de8a9c500f3903e", kill_on_drop: false }`
[INFO] [stdout] 321a841468ef3f2566ddac18a38b89fc3a694bb2679710213de8a9c500f3903e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a849d0b7ba9e834d2dc4ae49bb4ac846496bf30506c145ef9de291c3e0b4a5d7
[INFO] running `Command { std: "docker" "start" "-a" "a849d0b7ba9e834d2dc4ae49bb4ac846496bf30506c145ef9de291c3e0b4a5d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking secrecy v0.8.0
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking password-hash v0.5.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking argon2 v0.5.3
[INFO] [stderr]     Checking aes-kw v0.2.1
[INFO] [stderr]     Checking seed-keeper-core v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.03s
[INFO] running `Command { std: "docker" "inspect" "a849d0b7ba9e834d2dc4ae49bb4ac846496bf30506c145ef9de291c3e0b4a5d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a849d0b7ba9e834d2dc4ae49bb4ac846496bf30506c145ef9de291c3e0b4a5d7", kill_on_drop: false }`
[INFO] [stdout] a849d0b7ba9e834d2dc4ae49bb4ac846496bf30506c145ef9de291c3e0b4a5d7
[INFO] checking seed-keeper-core-0.3.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate seed-keeper-core 0.3.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate seed-keeper-core 0.3.2 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 crates.io crate seed-keeper-core 0.3.2
[INFO] finished tweaking crates.io crate seed-keeper-core 0.3.2
[INFO] tweaked toml for crates.io crate seed-keeper-core 0.3.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 1a638542d8105c4aeb7be23f0051ef0a71ad8645845b90cf349bf8ce898d0c02
[INFO] running `Command { std: "docker" "start" "-a" "1a638542d8105c4aeb7be23f0051ef0a71ad8645845b90cf349bf8ce898d0c02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a638542d8105c4aeb7be23f0051ef0a71ad8645845b90cf349bf8ce898d0c02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a638542d8105c4aeb7be23f0051ef0a71ad8645845b90cf349bf8ce898d0c02", kill_on_drop: false }`
[INFO] [stdout] 1a638542d8105c4aeb7be23f0051ef0a71ad8645845b90cf349bf8ce898d0c02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7ca96575d0df5de7a89f54222941ed801de823b8ba61c22ad2b379dc5950032f
[INFO] running `Command { std: "docker" "start" "-a" "7ca96575d0df5de7a89f54222941ed801de823b8ba61c22ad2b379dc5950032f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking secrecy v0.8.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking password-hash v0.5.0
[INFO] [stderr]     Checking aes-kw v0.2.1
[INFO] [stderr]     Checking argon2 v0.5.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking seed-keeper-core v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.42s
[INFO] running `Command { std: "docker" "inspect" "7ca96575d0df5de7a89f54222941ed801de823b8ba61c22ad2b379dc5950032f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ca96575d0df5de7a89f54222941ed801de823b8ba61c22ad2b379dc5950032f", kill_on_drop: false }`
[INFO] [stdout] 7ca96575d0df5de7a89f54222941ed801de823b8ba61c22ad2b379dc5950032f