[INFO] fetching crate underscore_args 0.1.2...
[INFO] checking underscore_args-0.1.2 against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] extracting crate underscore_args 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate underscore_args 0.1.2
[INFO] finished tweaking crates.io crate underscore_args 0.1.2
[INFO] tweaked toml for crates.io crate underscore_args 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate underscore_args 0.1.2 on toolchain 5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4957bbc8395f6dcb85db0bd819b27258e21ba6bb05584502167e4a3bc3cfe5e1
[INFO] running `Command { std: "docker" "start" "-a" "4957bbc8395f6dcb85db0bd819b27258e21ba6bb05584502167e4a3bc3cfe5e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4957bbc8395f6dcb85db0bd819b27258e21ba6bb05584502167e4a3bc3cfe5e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4957bbc8395f6dcb85db0bd819b27258e21ba6bb05584502167e4a3bc3cfe5e1", kill_on_drop: false }`
[INFO] [stdout] 4957bbc8395f6dcb85db0bd819b27258e21ba6bb05584502167e4a3bc3cfe5e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1121e52a080e86fa0573630e1b4f4f86ae659b125225a7b8015a3548d3791850
[INFO] running `Command { std: "docker" "start" "-a" "1121e52a080e86fa0573630e1b4f4f86ae659b125225a7b8015a3548d3791850", kill_on_drop: false }`
[INFO] [stderr]     Checking underscore_args v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(concat_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in CURRENT_RUSTC_VERSION; see <https://github.com/rust-lang/rust/pull/142704> for more information
[INFO] [stdout]   = note: use the `${concat(..)}` metavariable expression instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(concat_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in CURRENT_RUSTC_VERSION; see <https://github.com/rust-lang/rust/pull/142704> for more information
[INFO] [stdout]   = note: use the `${concat(..)}` metavariable expression instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `underscore_args` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: cannot find macro `concat_idents` in this scope
[INFO] [stdout]   --> src/lib.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 |       {concat_idents!($x, _, $(_,$y),*)($($z),*)}}
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 | /         args!(person(
[INFO] [stdout] 56 | |             fname: "Homer",
[INFO] [stdout] 57 | |             lname: "Simpson",
[INFO] [stdout] 58 | |             age: 42,
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |             planet: "Earth"
[INFO] [stdout] 62 | |         ));
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `args` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `concat_idents` in this scope
[INFO] [stdout]   --> src/lib.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 |     {concat_idents!($x, _, $(_,$y),*)($($z),*)}}
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         args!(line(color: [1.0; 4], from: [0.0, 0.0], to: [100.0, 100.0]));
[INFO] [stdout]    |         ------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `args` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `concat_idents` in this scope
[INFO] [stdout]   --> src/lib.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 |     {concat_idents!($x, _, $(_,$y),*)($($z),*)}}
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |         args!(clear(color: [1.0; 4],));
[INFO] [stdout]    |         ------------------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `args` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `concat_idents` in this scope
[INFO] [stdout]   --> src/lib.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 |     {concat_idents!($x, _, $(_,$y),*)($($z),*)}}
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |         args!(clear(color: [1.0; 4]));
[INFO] [stdout]    |         ----------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `args` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `underscore_args` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "1121e52a080e86fa0573630e1b4f4f86ae659b125225a7b8015a3548d3791850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1121e52a080e86fa0573630e1b4f4f86ae659b125225a7b8015a3548d3791850", kill_on_drop: false }`
[INFO] [stdout] 1121e52a080e86fa0573630e1b4f4f86ae659b125225a7b8015a3548d3791850
