[INFO] fetching crate melbootstrap 0.8.4...
[INFO] checking melbootstrap-0.8.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate melbootstrap 0.8.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate melbootstrap 0.8.4 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 melbootstrap 0.8.4
[INFO] finished tweaking crates.io crate melbootstrap 0.8.4
[INFO] tweaked toml for crates.io crate melbootstrap 0.8.4 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 90 packages
[INFO] [stderr]       Adding block-buffer v0.9.0 (latest: v0.10.4)
[INFO] [stderr]       Adding convert_case v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding darling v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_core v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_macro v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding digest v0.9.0 (latest: v0.10.7)
[INFO] [stderr]       Adding ed25519-consensus v1.2.1 (latest: v2.1.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding num_enum v0.5.11 (latest: v0.7.2)
[INFO] [stderr]       Adding num_enum_derive v0.5.11 (latest: v0.7.2)
[INFO] [stderr]       Adding parse-display v0.5.5 (latest: v0.9.0)
[INFO] [stderr]       Adding parse-display-derive v0.5.5 (latest: v0.9.0)
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (latest: v3.1.0)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (latest: v0.8.3)
[INFO] [stderr]       Adding serde-big-array v0.3.3 (latest: v0.5.1)
[INFO] [stderr]       Adding serde_with v1.14.0 (latest: v3.7.0)
[INFO] [stderr]       Adding serde_with_macros v1.5.2 (latest: v3.7.0)
[INFO] [stderr]       Adding sha2 v0.9.9 (latest: v0.10.8)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding structmeta v0.1.6 (latest: v0.3.0)
[INFO] [stderr]       Adding structmeta-derive v0.1.6 (latest: v0.3.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding toml_edit v0.19.15 (latest: v0.22.9)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.5)
[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 serde_with v1.14.0
[INFO] [stderr]   Downloaded structmeta-derive v0.1.6
[INFO] [stderr]   Downloaded structmeta v0.1.6
[INFO] [stderr]   Downloaded parse-display-derive v0.5.5
[INFO] [stderr]   Downloaded parse-display v0.5.5
[INFO] [stderr]   Downloaded base32 v0.4.0
[INFO] [stderr]   Downloaded ed25519-consensus v1.2.1
[INFO] [stderr]   Downloaded serde-big-array v0.3.3
[INFO] [stderr]   Downloaded serde_with_macros v1.5.2
[INFO] [stderr]   Downloaded stdcode v0.1.14
[INFO] [stderr]   Downloaded tmelcrypt v0.2.7
[INFO] [stderr]   Downloaded melstructs v0.3.2
[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] aa3de67d7d93422f394cad691140caf62e6ab5f46b2665b75652f469e5ba96b2
[INFO] running `Command { std: "docker" "start" "-a" "aa3de67d7d93422f394cad691140caf62e6ab5f46b2665b75652f469e5ba96b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa3de67d7d93422f394cad691140caf62e6ab5f46b2665b75652f469e5ba96b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa3de67d7d93422f394cad691140caf62e6ab5f46b2665b75652f469e5ba96b2", kill_on_drop: false }`
[INFO] [stdout] aa3de67d7d93422f394cad691140caf62e6ab5f46b2665b75652f469e5ba96b2
[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] ad7eeda4a96afdecb521db1375244df3d44f9ec87c560fae2f532ec5dc305f88
[INFO] running `Command { std: "docker" "start" "-a" "ad7eeda4a96afdecb521db1375244df3d44f9ec87c560fae2f532ec5dc305f88", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling blake3 v1.5.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking subtle-ng v2.5.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]    Compiling derive_arbitrary v1.3.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]     Checking curve25519-dalek-ng v4.1.1
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking constant_time_eq v0.3.0
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]    Compiling serde_repr v0.1.18
[INFO] [stderr]     Checking arbitrary v1.3.2
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling structmeta-derive v0.1.6
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking serde-big-array v0.3.3
[INFO] [stderr]     Checking ed25519-consensus v1.2.1
[INFO] [stderr]     Checking num_enum v0.5.11
[INFO] [stderr]    Compiling structmeta v0.1.6
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling serde_with_macros v1.5.2
[INFO] [stderr]    Compiling parse-display-derive v0.5.5
[INFO] [stderr]     Checking serde_with v1.14.0
[INFO] [stderr]     Checking parse-display v0.5.5
[INFO] [stderr]     Checking stdcode v0.1.14
[INFO] [stderr]     Checking tmelcrypt v0.2.7
[INFO] [stderr]     Checking melstructs v0.3.2
[INFO] [stderr]     Checking melbootstrap v0.8.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.16s
[INFO] running `Command { std: "docker" "inspect" "ad7eeda4a96afdecb521db1375244df3d44f9ec87c560fae2f532ec5dc305f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad7eeda4a96afdecb521db1375244df3d44f9ec87c560fae2f532ec5dc305f88", kill_on_drop: false }`
[INFO] [stdout] ad7eeda4a96afdecb521db1375244df3d44f9ec87c560fae2f532ec5dc305f88