[INFO] fetching crate ssz_rs 0.9.0...
[INFO] building ssz_rs-0.9.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate ssz_rs 0.9.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate ssz_rs 0.9.0
[INFO] finished tweaking crates.io crate ssz_rs 0.9.0
[INFO] tweaked toml for crates.io crate ssz_rs 0.9.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ssz_rs 0.9.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ssz_rs 0.9.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.10
[INFO] [stderr]   Downloaded project-root v0.2.2
[INFO] [stderr]   Downloaded hex-literal v0.3.4
[INFO] [stderr]   Downloaded ryu v1.0.14
[INFO] [stderr]   Downloaded serde_derive v1.0.167
[INFO] [stderr]   Downloaded serde v1.0.167
[INFO] [stderr]   Downloaded itoa v1.0.8
[INFO] [stderr]   Downloaded snap v1.1.0
[INFO] [stderr]   Downloaded quote v1.0.29
[INFO] [stderr]   Downloaded proc-macro2 v1.0.63
[INFO] [stderr]   Downloaded serde_json v1.0.100
[INFO] [stderr]   Downloaded syn v2.0.23
[INFO] [stderr]   Downloaded libc v0.2.147
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc3f3c23478e936e3b040b0c63c6f3eeee799d9a76a26eb6f7618275349d47d9
[INFO] running `Command { std: "docker" "start" "-a" "bc3f3c23478e936e3b040b0c63c6f3eeee799d9a76a26eb6f7618275349d47d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc3f3c23478e936e3b040b0c63c6f3eeee799d9a76a26eb6f7618275349d47d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc3f3c23478e936e3b040b0c63c6f3eeee799d9a76a26eb6f7618275349d47d9", kill_on_drop: false }`
[INFO] [stdout] bc3f3c23478e936e3b040b0c63c6f3eeee799d9a76a26eb6f7618275349d47d9
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 311f38623dfb720d4dd29806151d831d2f1350295c632714af6a51f8cac6efd3
[INFO] running `Command { std: "docker" "start" "-a" "311f38623dfb720d4dd29806151d831d2f1350295c632714af6a51f8cac6efd3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cpufeatures v0.2.9
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling serde v1.0.167
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling syn v2.0.23
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling ssz_rs v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.167
[INFO] [stderr]    Compiling ssz_rs_derive v0.9.0
[INFO] [stdout] warning: unused imports: `IterMut` and `iter::Enumerate`
[INFO] [stdout]   --> src/lib.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |             slice::{IterMut, SliceIndex},
[INFO] [stdout]    |                     ^^^^^^^
[INFO] [stdout] 72 |         },
[INFO] [stdout] 73 |         iter::Enumerate,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.15s
[INFO] running `Command { std: "docker" "inspect" "311f38623dfb720d4dd29806151d831d2f1350295c632714af6a51f8cac6efd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "311f38623dfb720d4dd29806151d831d2f1350295c632714af6a51f8cac6efd3", kill_on_drop: false }`
[INFO] [stdout] 311f38623dfb720d4dd29806151d831d2f1350295c632714af6a51f8cac6efd3
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fdb87986905abcad8fb548dab11b7445668367540634f07be27ecb015a8af8f
[INFO] running `Command { std: "docker" "start" "-a" "6fdb87986905abcad8fb548dab11b7445668367540634f07be27ecb015a8af8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.167
[INFO] [stderr]    Compiling snap v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.100
[INFO] [stderr]    Compiling ryu v1.0.14
[INFO] [stderr]    Compiling itoa v1.0.8
[INFO] [stderr]    Compiling project-root v0.2.2
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]    Compiling ssz_rs v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IterMut` and `iter::Enumerate`
[INFO] [stdout]   --> src/lib.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |             slice::{IterMut, SliceIndex},
[INFO] [stdout]    |                     ^^^^^^^
[INFO] [stdout] 72 |         },
[INFO] [stdout] 73 |         iter::Enumerate,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IterMut` and `iter::Enumerate`
[INFO] [stdout]   --> src/lib.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |             slice::{IterMut, SliceIndex},
[INFO] [stdout]    |                     ^^^^^^^
[INFO] [stdout] 72 |         },
[INFO] [stdout] 73 |         iter::Enumerate,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SingleFieldTestStruct` is never constructed
[INFO] [stdout]  --> examples/another_container.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct SingleFieldTestStruct {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SmallTestStruct` is never constructed
[INFO] [stdout]  --> examples/another_container.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct SmallTestStruct {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 50.09s
[INFO] running `Command { std: "docker" "inspect" "6fdb87986905abcad8fb548dab11b7445668367540634f07be27ecb015a8af8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fdb87986905abcad8fb548dab11b7445668367540634f07be27ecb015a8af8f", kill_on_drop: false }`
[INFO] [stdout] 6fdb87986905abcad8fb548dab11b7445668367540634f07be27ecb015a8af8f