[INFO] fetching crate sem 0.1.0...
[INFO] checking sem-0.1.0 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate sem 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sem 0.1.0 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sem 0.1.0
[INFO] finished tweaking crates.io crate sem 0.1.0
[INFO] tweaked toml for crates.io crate sem 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dcd465b3e93ab654a19984219d44e4e0b50f1af4fa359833a1fd08b328bb8cb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8dcd465b3e93ab654a19984219d44e4e0b50f1af4fa359833a1fd08b328bb8cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dcd465b3e93ab654a19984219d44e4e0b50f1af4fa359833a1fd08b328bb8cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dcd465b3e93ab654a19984219d44e4e0b50f1af4fa359833a1fd08b328bb8cb", kill_on_drop: false }`
[INFO] [stdout] 8dcd465b3e93ab654a19984219d44e4e0b50f1af4fa359833a1fd08b328bb8cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c3c97f2401e9a0848fd692082234ab67fe15e11de4b17deb2bf61c6fdd82dfa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7c3c97f2401e9a0848fd692082234ab67fe15e11de4b17deb2bf61c6fdd82dfa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking sem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: missing fragment specifier
[INFO] [stdout]    --> src/macros.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |     ($id: expr, $index) => ({
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(missing_fragment_specifier)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #40107 <https://github.com/rust-lang/rust/issues/40107>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing fragment specifier
[INFO] [stdout]    --> src/macros.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |     ($id: expr, $index) => ({
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #40107 <https://github.com/rust-lang/rust/issues/40107>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sem`
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: missing fragment specifier
[INFO] [stdout]    --> src/macros.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |     ($id: expr, $index) => ({
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(missing_fragment_specifier)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #40107 <https://github.com/rust-lang/rust/issues/40107>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing fragment specifier
[INFO] [stdout]    --> src/macros.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |     ($id: expr, $index) => ({
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #40107 <https://github.com/rust-lang/rust/issues/40107>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7c3c97f2401e9a0848fd692082234ab67fe15e11de4b17deb2bf61c6fdd82dfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c3c97f2401e9a0848fd692082234ab67fe15e11de4b17deb2bf61c6fdd82dfa", kill_on_drop: false }`
[INFO] [stdout] 7c3c97f2401e9a0848fd692082234ab67fe15e11de4b17deb2bf61c6fdd82dfa