[INFO] fetching crate cocoro 0.2.0...
[INFO] checking cocoro-0.2.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate cocoro 0.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate cocoro 0.2.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cocoro 0.2.0
[INFO] tweaked toml for crates.io crate cocoro 0.2.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cocoro 0.2.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cocoro 0.2.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ecfd8718ef06935c9a78e234a7d89297149e316b5c15f467613ecf66cd48f03
[INFO] running `Command { std: "docker" "start" "-a" "7ecfd8718ef06935c9a78e234a7d89297149e316b5c15f467613ecf66cd48f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ecfd8718ef06935c9a78e234a7d89297149e316b5c15f467613ecf66cd48f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ecfd8718ef06935c9a78e234a7d89297149e316b5c15f467613ecf66cd48f03", kill_on_drop: false }`
[INFO] [stdout] 7ecfd8718ef06935c9a78e234a7d89297149e316b5c15f467613ecf66cd48f03
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62f8e281b49db5d013a14521cdc2323bf942d3ded94f0d0acbc146bad476445e
[INFO] running `Command { std: "docker" "start" "-a" "62f8e281b49db5d013a14521cdc2323bf942d3ded94f0d0acbc146bad476445e", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking cocoro v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Numbers` is never constructed
[INFO] [stdout]   --> examples/simple_weave.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum ParseResult {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] 22 |     Words(Vec<String>),
[INFO] [stdout] 23 |     Numbers(Vec<i32>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseResult` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NumberCollector` is never constructed
[INFO] [stdout]    --> examples/simple_weave.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | struct NumberCollector {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AtomParser` is never constructed
[INFO] [stdout]   --> examples/sexpr_parser.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 | struct AtomParser(String);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListParser` is never constructed
[INFO] [stdout]    --> examples/sexpr_parser.rs:254:8
[INFO] [stdout]     |
[INFO] [stdout] 254 | struct ListParser {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "62f8e281b49db5d013a14521cdc2323bf942d3ded94f0d0acbc146bad476445e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f8e281b49db5d013a14521cdc2323bf942d3ded94f0d0acbc146bad476445e", kill_on_drop: false }`
[INFO] [stdout] 62f8e281b49db5d013a14521cdc2323bf942d3ded94f0d0acbc146bad476445e