[INFO] fetching crate serialr 0.2.1...
[INFO] building serialr-0.2.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate serialr 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate serialr 0.2.1
[INFO] finished tweaking crates.io crate serialr 0.2.1
[INFO] tweaked toml for crates.io crate serialr 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serialr 0.2.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da6fefab3f18066ba61ed4068988638af4a7a27a2729273ecb37c6de6dc01d18
[INFO] running `Command { std: "docker" "start" "-a" "da6fefab3f18066ba61ed4068988638af4a7a27a2729273ecb37c6de6dc01d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da6fefab3f18066ba61ed4068988638af4a7a27a2729273ecb37c6de6dc01d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da6fefab3f18066ba61ed4068988638af4a7a27a2729273ecb37c6de6dc01d18", kill_on_drop: false }`
[INFO] [stdout] da6fefab3f18066ba61ed4068988638af4a7a27a2729273ecb37c6de6dc01d18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a49ef629896b5230b0b2904938c89781e9af5d34cdcc61e0331bba2fe8342712
[INFO] running `Command { std: "docker" "start" "-a" "a49ef629896b5230b0b2904938c89781e9af5d34cdcc61e0331bba2fe8342712", kill_on_drop: false }`
[INFO] [stderr]    Compiling serialize_derive v0.1.5
[INFO] [stderr]    Compiling serialr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "a49ef629896b5230b0b2904938c89781e9af5d34cdcc61e0331bba2fe8342712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a49ef629896b5230b0b2904938c89781e9af5d34cdcc61e0331bba2fe8342712", kill_on_drop: false }`
[INFO] [stdout] a49ef629896b5230b0b2904938c89781e9af5d34cdcc61e0331bba2fe8342712
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f58c46055fac5e765b59f4b01087f0e487b1cb104688576ebcf89fb73a4ccb1
[INFO] running `Command { std: "docker" "start" "-a" "0f58c46055fac5e765b59f4b01087f0e487b1cb104688576ebcf89fb73a4ccb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serialr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Test1` is never constructed
[INFO] [stdout]   --> src/test.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Test1 {
[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 `Dict` is never constructed
[INFO] [stdout]   --> src/test.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Dict<K, V> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TestEnum` is never used
[INFO] [stdout]   --> src/test.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub enum TestEnum {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Vec2` is never constructed
[INFO] [stdout]    --> src/test.rs:152:12
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub struct Vec2<N: Any> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "0f58c46055fac5e765b59f4b01087f0e487b1cb104688576ebcf89fb73a4ccb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f58c46055fac5e765b59f4b01087f0e487b1cb104688576ebcf89fb73a4ccb1", kill_on_drop: false }`
[INFO] [stdout] 0f58c46055fac5e765b59f4b01087f0e487b1cb104688576ebcf89fb73a4ccb1