[INFO] fetching crate bellpepper-core 0.4.0...
[INFO] checking bellpepper-core-0.4.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate bellpepper-core 0.4.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate bellpepper-core 0.4.0 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 bellpepper-core 0.4.0
[INFO] finished tweaking crates.io crate bellpepper-core 0.4.0
[INFO] tweaked toml for crates.io crate bellpepper-core 0.4.0 written to /workspace/builds/worker-2-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 95 packages
[INFO] [stderr]       Adding anes v0.1.6 (latest: v0.2.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v3.2.25 (latest: v4.5.4)
[INFO] [stderr]       Adding clap_lex v0.2.4 (latest: v0.7.0)
[INFO] [stderr]       Adding criterion v0.4.0 (latest: v0.5.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (latest: v7.0.0)
[INFO] [stderr]       Adding radium v0.7.0 (latest: v1.1.0)
[INFO] [stderr]       Adding wyz v0.5.1 (latest: v0.6.1)
[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 radium v0.7.0
[INFO] [stderr]   Downloaded funty v2.0.0
[INFO] [stderr]   Downloaded byte-slice-cast v1.2.2
[INFO] [stderr]   Downloaded pairing v0.23.0
[INFO] [stderr]   Downloaded wyz v0.5.1
[INFO] [stderr]   Downloaded blstrs v0.7.1
[INFO] [stderr]   Downloaded blst v0.3.11
[INFO] [stderr]   Downloaded bitvec v1.0.1
[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] c6b2f8279cafe52f0a23c723b9d4aaac41068ae9aa58af20355c029b926fcd9f
[INFO] running `Command { std: "docker" "start" "-a" "c6b2f8279cafe52f0a23c723b9d4aaac41068ae9aa58af20355c029b926fcd9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6b2f8279cafe52f0a23c723b9d4aaac41068ae9aa58af20355c029b926fcd9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6b2f8279cafe52f0a23c723b9d4aaac41068ae9aa58af20355c029b926fcd9f", kill_on_drop: false }`
[INFO] [stdout] c6b2f8279cafe52f0a23c723b9d4aaac41068ae9aa58af20355c029b926fcd9f
[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] 196c8d14a3ac272017dc87cf4b5294be8553b811ed7667e2e9324ede04380f3d
[INFO] running `Command { std: "docker" "start" "-a" "196c8d14a3ac272017dc87cf4b5294be8553b811ed7667e2e9324ede04380f3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]    Compiling blst v0.3.11
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking constant_time_eq v0.3.0
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking byte-slice-cast v1.2.2
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking blake2s_simd v1.0.2
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking pairing v0.23.0
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking blstrs v0.7.1
[INFO] [stderr]     Checking bellpepper-core v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/util_cs/test_cs.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Constraint(usize),
[INFO] [stdout]    |     ---------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Constraint(()),
[INFO] [stdout]    |                ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/util_cs/test_cs.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Constraint(usize),
[INFO] [stdout]    |     ---------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Constraint(()),
[INFO] [stdout]    |                ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.37s
[INFO] running `Command { std: "docker" "inspect" "196c8d14a3ac272017dc87cf4b5294be8553b811ed7667e2e9324ede04380f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "196c8d14a3ac272017dc87cf4b5294be8553b811ed7667e2e9324ede04380f3d", kill_on_drop: false }`
[INFO] [stdout] 196c8d14a3ac272017dc87cf4b5294be8553b811ed7667e2e9324ede04380f3d