[INFO] fetching crate test_common 1.4.0...
[INFO] checking test_common-1.4.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate test_common 1.4.0 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate test_common 1.4.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate test_common 1.4.0
[INFO] finished tweaking crates.io crate test_common 1.4.0
[INFO] tweaked toml for crates.io crate test_common 1.4.0 written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a9c3ee4206d42ad1f4dc3eb69f1c559751818a1eb192db19e55ad334e1620de
[INFO] running `Command { std: "docker" "start" "-a" "4a9c3ee4206d42ad1f4dc3eb69f1c559751818a1eb192db19e55ad334e1620de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a9c3ee4206d42ad1f4dc3eb69f1c559751818a1eb192db19e55ad334e1620de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a9c3ee4206d42ad1f4dc3eb69f1c559751818a1eb192db19e55ad334e1620de", kill_on_drop: false }`
[INFO] [stdout] 4a9c3ee4206d42ad1f4dc3eb69f1c559751818a1eb192db19e55ad334e1620de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d8cb0dfcd3aa95836c608ed6a26487c5fdf17f84432284307593645450a55a3
[INFO] running `Command { std: "docker" "start" "-a" "8d8cb0dfcd3aa95836c608ed6a26487c5fdf17f84432284307593645450a55a3", kill_on_drop: false }`
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking test_common v1.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `test_folder_path` is never read
[INFO] [stdout]    --> src/fs/tmp.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut test_folder_path = PathBuf::from("/");
[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: value assigned to `test_file_path` is never read
[INFO] [stdout]    --> src/fs/tmp.rs:143:17
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let mut test_file_path = PathBuf::from("/");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.66s
[INFO] running `Command { std: "docker" "inspect" "8d8cb0dfcd3aa95836c608ed6a26487c5fdf17f84432284307593645450a55a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d8cb0dfcd3aa95836c608ed6a26487c5fdf17f84432284307593645450a55a3", kill_on_drop: false }`
[INFO] [stdout] 8d8cb0dfcd3aa95836c608ed6a26487c5fdf17f84432284307593645450a55a3