[INFO] fetching crate nameof 1.2.1...
[INFO] checking nameof-1.2.1 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate nameof 1.2.1 into /workspace/builds/worker-109/source
[INFO] validating manifest of crates.io crate nameof 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 nameof 1.2.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate nameof 1.2.1
[INFO] tweaked toml for crates.io crate nameof 1.2.1 written to /workspace/builds/worker-109/source/Cargo.toml
[INFO] crate crates.io crate nameof 1.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] d1f50ed2be7030d59ee327d19ae711829fd3223248155f518ba8332d4899af3d
[INFO] running `Command { std: "docker" "start" "-a" "d1f50ed2be7030d59ee327d19ae711829fd3223248155f518ba8332d4899af3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1f50ed2be7030d59ee327d19ae711829fd3223248155f518ba8332d4899af3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1f50ed2be7030d59ee327d19ae711829fd3223248155f518ba8332d4899af3d", kill_on_drop: false }`
[INFO] [stdout] d1f50ed2be7030d59ee327d19ae711829fd3223248155f518ba8332d4899af3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] a73479791b69d5123ee70718313716bf7e9c84d3824d1742b74940029efb1e91
[INFO] running `Command { std: "docker" "start" "-a" "a73479791b69d5123ee70718313716bf7e9c84d3824d1742b74940029efb1e91", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking nameof v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:86:13
[INFO] [stdout]     |
[INFO] [stdout] 86  |             &$n;
[INFO] [stdout]     |             ^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 169 |         assert_eq!(name_of!(test_variable), "test_variable");
[INFO] [stdout]     |                    ----------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `name_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 86  |             let _ = &$n;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:86:13
[INFO] [stdout]     |
[INFO] [stdout] 86  |             &$n;
[INFO] [stdout]     |             ^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 174 |         assert_eq!(name_of!(test_fn), "test_fn");
[INFO] [stdout]     |                    ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `name_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 86  |             let _ = &$n;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/basic.rs:26:42
[INFO] [stdout]    |
[INFO] [stdout] 26 |     println!("Binding `{}` holds `{}`.", name_of!(text), text);
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `name_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/basic.rs:28:42
[INFO] [stdout]    |
[INFO] [stdout] 28 |     println!("Function `{}` says `{}`.", name_of!(greet), greet());
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `name_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "a73479791b69d5123ee70718313716bf7e9c84d3824d1742b74940029efb1e91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a73479791b69d5123ee70718313716bf7e9c84d3824d1742b74940029efb1e91", kill_on_drop: false }`
[INFO] [stdout] a73479791b69d5123ee70718313716bf7e9c84d3824d1742b74940029efb1e91