[INFO] fetching crate rustc-ap-rustc_attr 699.0.0...
[INFO] checking rustc-ap-rustc_attr-699.0.0 against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] extracting crate rustc-ap-rustc_attr 699.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rustc-ap-rustc_attr 699.0.0 on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustc-ap-rustc_attr 699.0.0
[INFO] finished tweaking crates.io crate rustc-ap-rustc_attr 699.0.0
[INFO] tweaked toml for crates.io crate rustc-ap-rustc_attr 699.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 970bc92ca7a9a31bf1aba0975021d6e4c6b3ade9640492f2189b21ba749ec0c2
[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" "970bc92ca7a9a31bf1aba0975021d6e4c6b3ade9640492f2189b21ba749ec0c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "970bc92ca7a9a31bf1aba0975021d6e4c6b3ade9640492f2189b21ba749ec0c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "970bc92ca7a9a31bf1aba0975021d6e4c6b3ade9640492f2189b21ba749ec0c2", kill_on_drop: false }`
[INFO] [stdout] 970bc92ca7a9a31bf1aba0975021d6e4c6b3ade9640492f2189b21ba749ec0c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5121c7a9433d6bdadeaca5c8fdbef78d47d2b7542e8cec2a166f50adc3f928cb
[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" "5121c7a9433d6bdadeaca5c8fdbef78d47d2b7542e8cec2a166f50adc3f928cb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_arena v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_serialize v699.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_index v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_span v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_ast v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_target v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_feature v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_lint_defs v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_ast_pretty v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_errors v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_session v699.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_attr v699.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: environment variable `CFG_RELEASE_CHANNEL` not defined
[INFO] [stdout]    --> src/builtin.rs:565:27
[INFO] [stdout]     |
[INFO] [stdout] 565 |             let channel = env!("CFG_RELEASE_CHANNEL");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `CFG_RELEASE` not defined
[INFO] [stdout]    --> src/builtin.rs:567:48
[INFO] [stdout]     |
[INFO] [stdout] 567 |             let rustc_version = Version::parse(env!("CFG_RELEASE")).unwrap();
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `CFG_RELEASE_CHANNEL` not defined
[INFO] [stdout]    --> src/builtin.rs:565:27
[INFO] [stdout]     |
[INFO] [stdout] 565 |             let channel = env!("CFG_RELEASE_CHANNEL");
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `CFG_RELEASE` not defined
[INFO] [stdout]    --> src/builtin.rs:567:48
[INFO] [stdout]     |
[INFO] [stdout] 567 |             let rustc_version = Version::parse(env!("CFG_RELEASE")).unwrap();
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_attr`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5121c7a9433d6bdadeaca5c8fdbef78d47d2b7542e8cec2a166f50adc3f928cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5121c7a9433d6bdadeaca5c8fdbef78d47d2b7542e8cec2a166f50adc3f928cb", kill_on_drop: false }`
[INFO] [stdout] 5121c7a9433d6bdadeaca5c8fdbef78d47d2b7542e8cec2a166f50adc3f928cb