[INFO] fetching crate zebra-test 1.0.0-beta.31...
[INFO] checking zebra-test-1.0.0-beta.31 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate zebra-test 1.0.0-beta.31 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate zebra-test 1.0.0-beta.31 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zebra-test 1.0.0-beta.31
[INFO] finished tweaking crates.io crate zebra-test 1.0.0-beta.31
[INFO] tweaked toml for crates.io crate zebra-test 1.0.0-beta.31 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 138 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
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[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (latest: v0.50.0)
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[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
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[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
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[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spandoc v0.2.2
[INFO] [stderr]   Downloaded spandoc-attribute v0.1.1
[INFO] [stderr]   Downloaded color-spantrace v0.2.1
[INFO] [stderr]   Downloaded color-eyre v0.6.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a8f6d8d5c9c26226d4fc806bfb343e2a764da8d42a3fd9bc5b9f88a3f50f3ba
[INFO] running `Command { std: "docker" "start" "-a" "3a8f6d8d5c9c26226d4fc806bfb343e2a764da8d42a3fd9bc5b9f88a3f50f3ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a8f6d8d5c9c26226d4fc806bfb343e2a764da8d42a3fd9bc5b9f88a3f50f3ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a8f6d8d5c9c26226d4fc806bfb343e2a764da8d42a3fd9bc5b9f88a3f50f3ba", kill_on_drop: false }`
[INFO] [stdout] 3a8f6d8d5c9c26226d4fc806bfb343e2a764da8d42a3fd9bc5b9f88a3f50f3ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa9f41f67346b15087fb2ac607f8c69ffbb8880870703c4a3bca610004d6475a
[INFO] running `Command { std: "docker" "start" "-a" "fa9f41f67346b15087fb2ac607f8c69ffbb8880870703c4a3bca610004d6475a", kill_on_drop: false }`
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[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling rustix v0.38.32
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[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking color-eyre v0.6.3
[INFO] [stderr]    Compiling spandoc-attribute v0.1.1
[INFO] [stderr]     Checking spandoc v0.2.2
[INFO] [stderr]     Checking zebra-test v1.0.0-beta.31 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/vectors/block.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{collections::BTreeMap, convert::TryInto};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/vectors/block.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{collections::BTreeMap, convert::TryInto};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertionType` is never used
[INFO] [stdout]    --> src/mock_service.rs:969:7
[INFO] [stdout]     |
[INFO] [stdout] 969 | trait AssertionType {}
[INFO] [stdout]     |       ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertionType` is never used
[INFO] [stdout]    --> src/mock_service.rs:969:7
[INFO] [stdout]     |
[INFO] [stdout] 969 | trait AssertionType {}
[INFO] [stdout]     |       ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Error` is never constructed
[INFO] [stdout]   --> tests/transcript.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Error;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.00s
[INFO] running `Command { std: "docker" "inspect" "fa9f41f67346b15087fb2ac607f8c69ffbb8880870703c4a3bca610004d6475a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa9f41f67346b15087fb2ac607f8c69ffbb8880870703c4a3bca610004d6475a", kill_on_drop: false }`
[INFO] [stdout] fa9f41f67346b15087fb2ac607f8c69ffbb8880870703c4a3bca610004d6475a