[INFO] fetching crate rustc-ap-rustc_attr 669.0.0...
[INFO] testing rustc-ap-rustc_attr-669.0.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate rustc-ap-rustc_attr 669.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rustc-ap-rustc_attr 669.0.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustc-ap-rustc_attr 669.0.0
[INFO] finished tweaking crates.io crate rustc-ap-rustc_attr 669.0.0
[INFO] tweaked toml for crates.io crate rustc-ap-rustc_attr 669.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3178e55dcfe31b725eb7dfaf723537335912c2bdd77939d7c4d2cc2ebc36c6e2
[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" "3178e55dcfe31b725eb7dfaf723537335912c2bdd77939d7c4d2cc2ebc36c6e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3178e55dcfe31b725eb7dfaf723537335912c2bdd77939d7c4d2cc2ebc36c6e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3178e55dcfe31b725eb7dfaf723537335912c2bdd77939d7c4d2cc2ebc36c6e2", kill_on_drop: false }`
[INFO] [stdout] 3178e55dcfe31b725eb7dfaf723537335912c2bdd77939d7c4d2cc2ebc36c6e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6e6c269c4a2a347b3a9e26f2b027415b6901031dd754194c6385c3e5eff8d6df
[INFO] running `Command { std: "docker" "start" "-a" "6e6c269c4a2a347b3a9e26f2b027415b6901031dd754194c6385c3e5eff8d6df", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling rustc-ap-rustc_attr v669.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling stacker v0.1.9
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling measureme v0.7.1
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]    Compiling rustc-rayon v0.3.0
[INFO] [stderr]    Compiling rustc-ap-rustc_data_structures v669.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_arena v669.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_span v669.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_ast v669.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_target v669.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_errors v669.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_feature v669.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_session v669.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_ast_pretty v669.0.0
[INFO] [stdout] error: environment variable `CFG_RELEASE_CHANNEL` not defined
[INFO] [stdout]    --> builtin.rs:655:27
[INFO] [stdout]     |
[INFO] [stdout] 655 |             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]    --> builtin.rs:657:48
[INFO] [stdout]     |
[INFO] [stdout] 657 |             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] [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" "6e6c269c4a2a347b3a9e26f2b027415b6901031dd754194c6385c3e5eff8d6df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e6c269c4a2a347b3a9e26f2b027415b6901031dd754194c6385c3e5eff8d6df", kill_on_drop: false }`
[INFO] [stdout] 6e6c269c4a2a347b3a9e26f2b027415b6901031dd754194c6385c3e5eff8d6df