[INFO] cloning repository https://github.com/bartgut/RustAtomicsExercise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bartgut/RustAtomicsExercise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartgut%2FRustAtomicsExercise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartgut%2FRustAtomicsExercise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f120fec3e07123f444aa945e8ae4fa4fa8992f6
[INFO] testing bartgut/RustAtomicsExercise against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartgut%2FRustAtomicsExercise" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bartgut/RustAtomicsExercise on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bartgut/RustAtomicsExercise
[INFO] finished tweaking git repo https://github.com/bartgut/RustAtomicsExercise
[INFO] tweaked toml for git repo https://github.com/bartgut/RustAtomicsExercise written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bartgut/RustAtomicsExercise 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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8214c4c45489b32c9b2fbf8fa2332959bf7f81af968cc2267762ed6cb01ba183
[INFO] running `Command { std: "docker" "start" "-a" "8214c4c45489b32c9b2fbf8fa2332959bf7f81af968cc2267762ed6cb01ba183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8214c4c45489b32c9b2fbf8fa2332959bf7f81af968cc2267762ed6cb01ba183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8214c4c45489b32c9b2fbf8fa2332959bf7f81af968cc2267762ed6cb01ba183", kill_on_drop: false }`
[INFO] [stdout] 8214c4c45489b32c9b2fbf8fa2332959bf7f81af968cc2267762ed6cb01ba183
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 874bd520fe4f02fb39e730300eb3b8e692c84c0030571ebf2fd9dd7c8350bac5
[INFO] running `Command { std: "docker" "start" "-a" "874bd520fe4f02fb39e730300eb3b8e692c84c0030571ebf2fd9dd7c8350bac5", kill_on_drop: false }`
[INFO] [stderr]    Compiling Atomics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0583]: file not found for module `bin`
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod bin;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: to create the module `bin`, create file "src/bin.rs" or "src/bin/mod.rs"
[INFO] [stdout]   = note: if there is a `mod bin` elsewhere in the crate already, import it with `use crate::...` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0583`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Atomics` (bin "Atomics") due to 1 previous error
[INFO] [stdout] error[E0583]: file not found for module `bin`
[INFO] [stdout]  --> src/bin/cell.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod bin;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: to create the module `bin`, create file "src/bin/bin.rs" or "src/bin/bin/mod.rs"
[INFO] [stdout]   = note: if there is a `mod bin` elsewhere in the crate already, import it with `use crate::...` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0583`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Atomics` (bin "cell") due to 1 previous error
[INFO] [stdout] warning: associated function `remove_child` is never used
[INFO] [stdout]   --> src/bin/tree.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn remove_child(parent: &Rc<TreeNode>, child_value: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "874bd520fe4f02fb39e730300eb3b8e692c84c0030571ebf2fd9dd7c8350bac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "874bd520fe4f02fb39e730300eb3b8e692c84c0030571ebf2fd9dd7c8350bac5", kill_on_drop: false }`
[INFO] [stdout] 874bd520fe4f02fb39e730300eb3b8e692c84c0030571ebf2fd9dd7c8350bac5