[INFO] cloning repository https://github.com/gavynriebau/filesystem_race_condition_bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gavynriebau/filesystem_race_condition_bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavynriebau%2Ffilesystem_race_condition_bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavynriebau%2Ffilesystem_race_condition_bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d24771306120ef7022e234597155efebadd92c1
[INFO] testing gavynriebau/filesystem_race_condition_bug against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavynriebau%2Ffilesystem_race_condition_bug" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gavynriebau/filesystem_race_condition_bug on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gavynriebau/filesystem_race_condition_bug
[INFO] finished tweaking git repo https://github.com/gavynriebau/filesystem_race_condition_bug
[INFO] tweaked toml for git repo https://github.com/gavynriebau/filesystem_race_condition_bug written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/gavynriebau/filesystem_race_condition_bug already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c05de04121c1156659d29d0eebbf56ed89a32d7270d6419d863a9a1348e8c264
[INFO] running `Command { std: "docker" "start" "-a" "c05de04121c1156659d29d0eebbf56ed89a32d7270d6419d863a9a1348e8c264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c05de04121c1156659d29d0eebbf56ed89a32d7270d6419d863a9a1348e8c264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c05de04121c1156659d29d0eebbf56ed89a32d7270d6419d863a9a1348e8c264", kill_on_drop: false }`
[INFO] [stdout] c05de04121c1156659d29d0eebbf56ed89a32d7270d6419d863a9a1348e8c264
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 864ad57d1a0911527a23ca150ce61baad03a29074b848ba4defe830aa02ce662
[INFO] running `Command { std: "docker" "start" "-a" "864ad57d1a0911527a23ca150ce61baad03a29074b848ba4defe830aa02ce662", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling filesystem v0.4.2
[INFO] [stderr]    Compiling filesystem_race_condition_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `filesystem::*`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use filesystem::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `filesystem_race_condition_bug`
[INFO] [stdout]   --> src/main.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / extern crate filesystem;
[INFO] [stdout] 3  | |
[INFO] [stdout] 4  | | use filesystem::*;
[INFO] [stdout] 5  | | use std::path::Path;
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     }
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `filesystem_race_condition_bug`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "864ad57d1a0911527a23ca150ce61baad03a29074b848ba4defe830aa02ce662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "864ad57d1a0911527a23ca150ce61baad03a29074b848ba4defe830aa02ce662", kill_on_drop: false }`
[INFO] [stdout] 864ad57d1a0911527a23ca150ce61baad03a29074b848ba4defe830aa02ce662