[INFO] cloning repository https://github.com/JKomieter/Filer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JKomieter/Filer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJKomieter%2FFiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJKomieter%2FFiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e09ece3deb4faf54fb0d49d4ce7c47cff1e2b96c
[INFO] checking JKomieter/Filer against try#af54b6062f33b99e418444700f3a823ef0214052 for pr-138952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJKomieter%2FFiler" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JKomieter/Filer on toolchain af54b6062f33b99e418444700f3a823ef0214052
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af54b6062f33b99e418444700f3a823ef0214052" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JKomieter/Filer
[INFO] finished tweaking git repo https://github.com/JKomieter/Filer
[INFO] tweaked toml for git repo https://github.com/JKomieter/Filer written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JKomieter/Filer 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" "+af54b6062f33b99e418444700f3a823ef0214052" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+af54b6062f33b99e418444700f3a823ef0214052" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 267f2496c026c6f82b057515394c66b077ae3be39a798c6f05a71c4a9ed843cb
[INFO] running `Command { std: "docker" "start" "-a" "267f2496c026c6f82b057515394c66b077ae3be39a798c6f05a71c4a9ed843cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "267f2496c026c6f82b057515394c66b077ae3be39a798c6f05a71c4a9ed843cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "267f2496c026c6f82b057515394c66b077ae3be39a798c6f05a71c4a9ed843cb", kill_on_drop: false }`
[INFO] [stdout] 267f2496c026c6f82b057515394c66b077ae3be39a798c6f05a71c4a9ed843cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+af54b6062f33b99e418444700f3a823ef0214052" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 303d5c52af01e7f1bde904b32cdaa0554ff197b03117e4386b2b41505ff8ded3
[INFO] running `Command { std: "docker" "start" "-a" "303d5c52af01e7f1bde904b32cdaa0554ff197b03117e4386b2b41505ff8ded3", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]     Checking filer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `handle_cmd` is never used
[INFO] [stdout]  --> src/file_handlers.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn handle_cmd(cmd: &str, filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file_contents` is never used
[INFO] [stdout]   --> src/file_handlers.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn read_file_contents(filename: &str) -> Result<String, &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file` is never used
[INFO] [stdout]   --> src/file_handlers.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn create_file(filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file_version` is never used
[INFO] [stdout]   --> src/file_handlers.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn create_file_version(filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `delete_file` is never used
[INFO] [stdout]   --> src/file_handlers.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn delete_file(filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare_versions` is never used
[INFO] [stdout]   --> src/file_handlers.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn compare_versions(filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_cmd` is never used
[INFO] [stdout]  --> src/file_handlers.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn handle_cmd(cmd: &str, filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{env, process};
[INFO] [stdout]   |           ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{env, process};
[INFO] [stdout]   |           ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "303d5c52af01e7f1bde904b32cdaa0554ff197b03117e4386b2b41505ff8ded3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "303d5c52af01e7f1bde904b32cdaa0554ff197b03117e4386b2b41505ff8ded3", kill_on_drop: false }`
[INFO] [stdout] 303d5c52af01e7f1bde904b32cdaa0554ff197b03117e4386b2b41505ff8ded3