[INFO] fetching crate avrow 0.2.1...
[INFO] testing avrow-0.2.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate avrow 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate avrow 0.2.1
[INFO] finished tweaking crates.io crate avrow 0.2.1
[INFO] tweaked toml for crates.io crate avrow 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate avrow 0.2.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate avrow 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zstd v0.5.3+zstd.1.4.5
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[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ebbe80d639b190220029c25a4bf8a966d77ab22e8c14750b9efdf4bba54a99a
[INFO] running `Command { std: "docker" "start" "-a" "6ebbe80d639b190220029c25a4bf8a966d77ab22e8c14750b9efdf4bba54a99a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ebbe80d639b190220029c25a4bf8a966d77ab22e8c14750b9efdf4bba54a99a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ebbe80d639b190220029c25a4bf8a966d77ab22e8c14750b9efdf4bba54a99a", kill_on_drop: false }`
[INFO] [stdout] 6ebbe80d639b190220029c25a4bf8a966d77ab22e8c14750b9efdf4bba54a99a
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc8b802080b83a0820ce8812c2584e5313b6ed0961c126f5a794718d19dfb548
[INFO] running `Command { std: "docker" "start" "-a" "bc8b802080b83a0820ce8812c2584e5313b6ed0961c126f5a794718d19dfb548", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling serde_json v1.0.58
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling integer-encoding v2.0.0
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]    Compiling avrow v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: value assigned to `found` is never read
[INFO] [stdout]    --> src/error.rs:163:19
[INFO] [stdout]     |
[INFO] [stdout] 163 |     CRCMismatch { found: u32, expected: u32 },
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:62:9
[INFO] [stdout]     |
[INFO] [stdout]  62 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_assignments)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: value assigned to `expected` is never read
[INFO] [stdout]    --> src/error.rs:163:31
[INFO] [stdout]     |
[INFO] [stdout] 163 |     CRCMismatch { found: u32, expected: u32 },
[INFO] [stdout]     |                               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `aliases` is never read
[INFO] [stdout]    --> src/schema/common.rs:226:16
[INFO] [stdout]     |
[INFO] [stdout] 221 | pub struct Field {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 226 |     pub(crate) aliases: Option<Vec<String>>,
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Field` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `avrow` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "bc8b802080b83a0820ce8812c2584e5313b6ed0961c126f5a794718d19dfb548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc8b802080b83a0820ce8812c2584e5313b6ed0961c126f5a794718d19dfb548", kill_on_drop: false }`
[INFO] [stdout] bc8b802080b83a0820ce8812c2584e5313b6ed0961c126f5a794718d19dfb548