[INFO] fetching crate silkworm_syn 0.1.0-dev.1...
[INFO] checking silkworm_syn-0.1.0-dev.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate silkworm_syn 0.1.0-dev.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate silkworm_syn 0.1.0-dev.1 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 silkworm_syn 0.1.0-dev.1
[INFO] finished tweaking crates.io crate silkworm_syn 0.1.0-dev.1
[INFO] tweaked toml for crates.io crate silkworm_syn 0.1.0-dev.1 written to /workspace/builds/worker-6-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 36 packages
[INFO] [stderr]       Adding ahash v0.3.8 (latest: v0.8.11)
[INFO] [stderr]       Adding ansi_term v0.11.0 (latest: v0.12.1)
[INFO] [stderr]       Adding arraydeque v0.4.5 (latest: v0.5.1)
[INFO] [stderr]       Adding arrayvec v0.5.2 (latest: v0.7.4)
[INFO] [stderr]       Adding ctor v0.1.26 (latest: v0.2.7)
[INFO] [stderr]       Adding hashbrown v0.7.2 (latest: v0.14.3)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding pretty_assertions v0.6.1 (latest: v1.4.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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 silkworm_sourcemap v0.1.0-dev.1
[INFO] [stderr]   Downloaded silkworm_err v0.1.0-dev.1
[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] 153841c749d34c2d02961d65ab3c8c6fd090e2d040aa1e4380f4c24099a80f62
[INFO] running `Command { std: "docker" "start" "-a" "153841c749d34c2d02961d65ab3c8c6fd090e2d040aa1e4380f4c24099a80f62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "153841c749d34c2d02961d65ab3c8c6fd090e2d040aa1e4380f4c24099a80f62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "153841c749d34c2d02961d65ab3c8c6fd090e2d040aa1e4380f4c24099a80f62", kill_on_drop: false }`
[INFO] [stdout] 153841c749d34c2d02961d65ab3c8c6fd090e2d040aa1e4380f4c24099a80f62
[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] b836a3218b663e418072eacee2be1b5f8e718c9727c31545e5fca91002445cd0
[INFO] running `Command { std: "docker" "start" "-a" "b836a3218b663e418072eacee2be1b5f8e718c9727c31545e5fca91002445cd0", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking silkworm_sourcemap v0.1.0-dev.1
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking silkworm_err v0.1.0-dev.1
[INFO] [stderr]     Checking silkworm_syn v0.1.0-dev.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Span` is imported redundantly
[INFO] [stdout]    --> src/parse/expr.rs:266:9
[INFO] [stdout]     |
[INFO] [stdout] 262 |     use super::*;
[INFO] [stdout]     |         -------- the item `Span` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 266 |     use crate::Span;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Span` is imported redundantly
[INFO] [stdout]    --> src/parse/str.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |     use super::*;
[INFO] [stdout]     |         -------- the item `Span` is already imported here
[INFO] [stdout] 315 |
[INFO] [stdout] 316 |     use silkworm_sourcemap::Span;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.06s
[INFO] running `Command { std: "docker" "inspect" "b836a3218b663e418072eacee2be1b5f8e718c9727c31545e5fca91002445cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b836a3218b663e418072eacee2be1b5f8e718c9727c31545e5fca91002445cd0", kill_on_drop: false }`
[INFO] [stdout] b836a3218b663e418072eacee2be1b5f8e718c9727c31545e5fca91002445cd0
[INFO] checking silkworm_syn-0.1.0-dev.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate silkworm_syn 0.1.0-dev.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate silkworm_syn 0.1.0-dev.1 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 silkworm_syn 0.1.0-dev.1
[INFO] finished tweaking crates.io crate silkworm_syn 0.1.0-dev.1
[INFO] tweaked toml for crates.io crate silkworm_syn 0.1.0-dev.1 written to /workspace/builds/worker-6-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]     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] 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] dc481c7398fe0e1f4494b8702bedb4d14c61482c52fdb34538921308d783ba63
[INFO] running `Command { std: "docker" "start" "-a" "dc481c7398fe0e1f4494b8702bedb4d14c61482c52fdb34538921308d783ba63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc481c7398fe0e1f4494b8702bedb4d14c61482c52fdb34538921308d783ba63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc481c7398fe0e1f4494b8702bedb4d14c61482c52fdb34538921308d783ba63", kill_on_drop: false }`
[INFO] [stdout] dc481c7398fe0e1f4494b8702bedb4d14c61482c52fdb34538921308d783ba63
[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] 03d13067c992fe751e2fc1bd9a4ab9ffb33c50fb171bc4d48b6c7ab8187b7fa3
[INFO] running `Command { std: "docker" "start" "-a" "03d13067c992fe751e2fc1bd9a4ab9ffb33c50fb171bc4d48b6c7ab8187b7fa3", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking silkworm_sourcemap v0.1.0-dev.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking silkworm_err v0.1.0-dev.1
[INFO] [stderr]     Checking silkworm_syn v0.1.0-dev.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Span` is imported redundantly
[INFO] [stdout]    --> src/parse/expr.rs:266:9
[INFO] [stdout]     |
[INFO] [stdout] 262 |     use super::*;
[INFO] [stdout]     |         -------- the item `Span` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 266 |     use crate::Span;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Span` is imported redundantly
[INFO] [stdout]    --> src/parse/str.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |     use super::*;
[INFO] [stdout]     |         -------- the item `Span` is already imported here
[INFO] [stdout] 315 |
[INFO] [stdout] 316 |     use silkworm_sourcemap::Span;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.41s
[INFO] running `Command { std: "docker" "inspect" "03d13067c992fe751e2fc1bd9a4ab9ffb33c50fb171bc4d48b6c7ab8187b7fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03d13067c992fe751e2fc1bd9a4ab9ffb33c50fb171bc4d48b6c7ab8187b7fa3", kill_on_drop: false }`
[INFO] [stdout] 03d13067c992fe751e2fc1bd9a4ab9ffb33c50fb171bc4d48b6c7ab8187b7fa3