[INFO] fetching crate rx-renamer 0.1.0...
[INFO] checking rx-renamer-0.1.0 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate rx-renamer 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rx-renamer 0.1.0
[INFO] finished tweaking crates.io crate rx-renamer 0.1.0
[INFO] tweaked toml for crates.io crate rx-renamer 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rx-renamer 0.1.0 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rx-renamer 0.1.0 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79d8550d20fb39479b606c9d655633131180c098c6be8e0d324188a121975a39
[INFO] running `Command { std: "docker" "start" "-a" "79d8550d20fb39479b606c9d655633131180c098c6be8e0d324188a121975a39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79d8550d20fb39479b606c9d655633131180c098c6be8e0d324188a121975a39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79d8550d20fb39479b606c9d655633131180c098c6be8e0d324188a121975a39", kill_on_drop: false }`
[INFO] [stdout] 79d8550d20fb39479b606c9d655633131180c098c6be8e0d324188a121975a39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09198caed947130360b7f71bef0da6b93bc29fafcd27c137793d6c517ddc9f4d
[INFO] running `Command { std: "docker" "start" "-a" "09198caed947130360b7f71bef0da6b93bc29fafcd27c137793d6c517ddc9f4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling serde_derive v1.0.139
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking std_prelude v0.2.12
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking any_ascii v0.3.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking stfu8 v0.2.5
[INFO] [stderr]     Checking path_abs v0.4.1
[INFO] [stderr]     Checking rx-renamer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tempfile::tempfile`
[INFO] [stdout]   --> src/dumpfile.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     use tempfile::tempfile;
[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 import: `std::io::prelude::*`
[INFO] [stdout]    --> src/dumpfile.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     use std::io::prelude::*;  
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dirs` is never read
[INFO] [stdout]   --> src/config.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Config {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub dirs: bool, 
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `CreateSymlink` is never constructed
[INFO] [stdout]   --> src/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub enum  ErrorKind {
[INFO] [stdout]    |           --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 10 |     CreateSymlink, 
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `warn` is never read
[INFO] [stdout]   --> src/output.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Colors {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 25 |     pub info: Style, 
[INFO] [stdout] 26 |     pub warn: Style, 
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_symlink` is never used
[INFO] [stdout]    --> src/fileutils.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub fn create_symlink(source: &Path, symlink_file: &Path) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cleanup_paths` is never used
[INFO] [stdout]    --> src/fileutils.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 148 | pub fn cleanup_paths(paths: &mut PathList, keep_dirs: bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dirs` is never read
[INFO] [stdout]   --> src/config.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Config {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub dirs: bool, 
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `warn` is never read
[INFO] [stdout]   --> src/output.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Colors {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 25 |     pub info: Style, 
[INFO] [stdout] 26 |     pub warn: Style, 
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.12s
[INFO] running `Command { std: "docker" "inspect" "09198caed947130360b7f71bef0da6b93bc29fafcd27c137793d6c517ddc9f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09198caed947130360b7f71bef0da6b93bc29fafcd27c137793d6c517ddc9f4d", kill_on_drop: false }`
[INFO] [stdout] 09198caed947130360b7f71bef0da6b93bc29fafcd27c137793d6c517ddc9f4d