[INFO] fetching crate custom_error_core 1.9.0...
[INFO] checking custom_error_core-1.9.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate custom_error_core 1.9.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate custom_error_core 1.9.0
[INFO] finished tweaking crates.io crate custom_error_core 1.9.0
[INFO] tweaked toml for crates.io crate custom_error_core 1.9.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate custom_error_core 1.9.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 37445ba906d423040833f4d8eb8ec9c1f320d4775838ee92829f918e61c085d0
[INFO] running `Command { std: "docker" "start" "-a" "37445ba906d423040833f4d8eb8ec9c1f320d4775838ee92829f918e61c085d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37445ba906d423040833f4d8eb8ec9c1f320d4775838ee92829f918e61c085d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37445ba906d423040833f4d8eb8ec9c1f320d4775838ee92829f918e61c085d0", kill_on_drop: false }`
[INFO] [stdout] 37445ba906d423040833f4d8eb8ec9c1f320d4775838ee92829f918e61c085d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 322e59c0a9ec1f48714aedb4ed3a10ddff7bd586b61bb4961f082cf63e29db75
[INFO] running `Command { std: "docker" "start" "-a" "322e59c0a9ec1f48714aedb4ed3a10ddff7bd586b61bb4961f082cf63e29db75", kill_on_drop: false }`
[INFO] [stderr]     Checking custom_error_core v1.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: named argument `description` is not used by name
[INFO] [stdout]    --> src/lib.rs:555:32
[INFO] [stdout]     |
[INFO] [stdout] 555 |         custom_error!(MyError {description: &'static str} = "{}");
[INFO] [stdout]     |                                ^^^^^^^^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(named_arguments_used_positionally)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `x` is not used by name
[INFO] [stdout]    --> src/lib.rs:627:41
[INFO] [stdout]     |
[INFO] [stdout] 627 |             custom_error! {pub MyError {x: &'static str} = "{}"}
[INFO] [stdout]     |                                         ^ this named argument is referred to by position in formatting string
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `x` is not used by name
[INFO] [stdout]    --> src/lib.rs:637:17
[INFO] [stdout]     |
[INFO] [stdout] 637 |                 x: &'static str
[INFO] [stdout]     |                 ^ this named argument is referred to by position in formatting string
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `custom_error`
[INFO] [stdout]  --> tests/tests.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate custom_error;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `custom_error` in this scope
[INFO] [stdout]  --> tests/tests.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | custom_error! {
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `custom_error` is imported here, but it is an unresolved item, not a macro
[INFO] [stdout]  --> tests/tests.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate custom_error;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 4 + use custom_error_core::custom_error;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `custom_error` in this scope
[INFO] [stdout]   --> tests/tests.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | custom_error! {FileParseError
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `custom_error` is imported here, but it is an unresolved item, not a macro
[INFO] [stdout]   --> tests/tests.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout]  2 | extern crate custom_error;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout]  4 + use custom_error_core::custom_error;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `OpenFileError` in this scope
[INFO] [stdout]   --> tests/tests.rs:13:54
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn open_file_verbose(filename: &str) -> Result<File, OpenFileError> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn open_file_verbose<OpenFileError>(filename: &str) -> Result<File, OpenFileError> {
[INFO] [stdout]    |                     +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `FileParseError` in this scope
[INFO] [stdout]   --> tests/tests.rs:29:49
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn parse_hex_file(filename: &str) -> Result<u8, FileParseError> {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn parse_hex_file<FileParseError>(filename: &str) -> Result<u8, FileParseError> {
[INFO] [stdout]    |                  ++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io` and `num::ParseIntError`
[INFO] [stdout]  --> tests/tests.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fs::File, io, io::ErrorKind, io::Read, num::ParseIntError, result::Result};
[INFO] [stdout]   |                     ^^                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `OpenFileError`
[INFO] [stdout]   --> tests/tests.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         _ => OpenFileError::Other,
[INFO] [stdout]    |              ^^^^^^^^^^^^^ use of undeclared type `OpenFileError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `OpenFileError`
[INFO] [stdout]   --> tests/tests.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |         ErrorKind::NotFound => OpenFileError::NotFound {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^ use of undeclared type `OpenFileError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `FileParseError`
[INFO] [stdout]   --> tests/tests.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(FileParseError::TooLarge { value })
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ use of undeclared type `FileParseError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `custom_error_core` (test "tests") due to 8 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "322e59c0a9ec1f48714aedb4ed3a10ddff7bd586b61bb4961f082cf63e29db75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "322e59c0a9ec1f48714aedb4ed3a10ddff7bd586b61bb4961f082cf63e29db75", kill_on_drop: false }`
[INFO] [stdout] 322e59c0a9ec1f48714aedb4ed3a10ddff7bd586b61bb4961f082cf63e29db75