[INFO] fetching crate klu_core 0.2.1...
[INFO] checking klu_core-0.2.1 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate klu_core 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate klu_core 0.2.1 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate klu_core 0.2.1
[INFO] finished tweaking crates.io crate klu_core 0.2.1
[INFO] tweaked toml for crates.io crate klu_core 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate klu_core 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbc5ceb71a7056a6ecdc244ce8f0499c75660cb02689c319eb4b015cd4a9f38b
[INFO] running `Command { std: "docker" "start" "-a" "cbc5ceb71a7056a6ecdc244ce8f0499c75660cb02689c319eb4b015cd4a9f38b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbc5ceb71a7056a6ecdc244ce8f0499c75660cb02689c319eb4b015cd4a9f38b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbc5ceb71a7056a6ecdc244ce8f0499c75660cb02689c319eb4b015cd4a9f38b", kill_on_drop: false }`
[INFO] [stdout] cbc5ceb71a7056a6ecdc244ce8f0499c75660cb02689c319eb4b015cd4a9f38b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 549718c45ee385e5da1047acc10e4b7c751883e53212cd6c7bc361c99e41d38d
[INFO] running `Command { std: "docker" "start" "-a" "549718c45ee385e5da1047acc10e4b7c751883e53212cd6c7bc361c99e41d38d", kill_on_drop: false }`
[INFO] [stderr]     Checking klu_core v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `headersize` and `filesize` are never read
[INFO] [stdout]   --> src/read/mod.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub struct Archive {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 77 |     file: File,
[INFO] [stdout] 78 |     headersize: u64,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 79 |     filesize: u64,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Archive` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `headersize` and `filesize` are never read
[INFO] [stdout]   --> src/read/mod.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub struct Archive {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 77 |     file: File,
[INFO] [stdout] 78 |     headersize: u64,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 79 |     filesize: u64,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Archive` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `klu`
[INFO] [stdout]  --> examples/r_exists.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate klu;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> examples/read_file.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `klu_core` (example "r_exists") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "549718c45ee385e5da1047acc10e4b7c751883e53212cd6c7bc361c99e41d38d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "549718c45ee385e5da1047acc10e4b7c751883e53212cd6c7bc361c99e41d38d", kill_on_drop: false }`
[INFO] [stdout] 549718c45ee385e5da1047acc10e4b7c751883e53212cd6c7bc361c99e41d38d