[INFO] fetching crate shadow-clone 1.2.1...
[INFO] checking shadow-clone-1.2.1 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate shadow-clone 1.2.1 into /workspace/builds/worker-117/source
[INFO] validating manifest of crates.io crate shadow-clone 1.2.1 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shadow-clone 1.2.1
[INFO] finished tweaking crates.io crate shadow-clone 1.2.1
[INFO] tweaked toml for crates.io crate shadow-clone 1.2.1 written to /workspace/builds/worker-117/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b71f4aa18e391bb75e5ea3211555a8dc60e797cda26dcf78f80d06046dcd5f1e
[INFO] running `Command { std: "docker" "start" "-a" "b71f4aa18e391bb75e5ea3211555a8dc60e797cda26dcf78f80d06046dcd5f1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b71f4aa18e391bb75e5ea3211555a8dc60e797cda26dcf78f80d06046dcd5f1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b71f4aa18e391bb75e5ea3211555a8dc60e797cda26dcf78f80d06046dcd5f1e", kill_on_drop: false }`
[INFO] [stdout] b71f4aa18e391bb75e5ea3211555a8dc60e797cda26dcf78f80d06046dcd5f1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ccd9993bd9b5a2c2ba189bfea7f0207e6fec3c025093d0f6f5267bda2d48c66
[INFO] running `Command { std: "docker" "start" "-a" "5ccd9993bd9b5a2c2ba189bfea7f0207e6fec3c025093d0f6f5267bda2d48c66", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking shadow-clone v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]  --> tests/mod.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let _ = move |_: i32| s = "changed".to_string();
[INFO] [stdout]   |                               ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> tests/mod.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let _ = move |_: i32| s = "changed".to_string();
[INFO] [stdout]   |                               ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]   = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "5ccd9993bd9b5a2c2ba189bfea7f0207e6fec3c025093d0f6f5267bda2d48c66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ccd9993bd9b5a2c2ba189bfea7f0207e6fec3c025093d0f6f5267bda2d48c66", kill_on_drop: false }`
[INFO] [stdout] 5ccd9993bd9b5a2c2ba189bfea7f0207e6fec3c025093d0f6f5267bda2d48c66