[INFO] fetching crate gluon_vm 0.17.2...
[INFO] testing gluon_vm-0.17.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate gluon_vm 0.17.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate gluon_vm 0.17.2 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gluon_vm 0.17.2
[INFO] finished tweaking crates.io crate gluon_vm 0.17.2
[INFO] tweaked toml for crates.io crate gluon_vm 0.17.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa64c646a2f9e952c45668e6b92010b776cf82a76f1434d689b8a5a4c88a1391
[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" "fa64c646a2f9e952c45668e6b92010b776cf82a76f1434d689b8a5a4c88a1391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa64c646a2f9e952c45668e6b92010b776cf82a76f1434d689b8a5a4c88a1391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa64c646a2f9e952c45668e6b92010b776cf82a76f1434d689b8a5a4c88a1391", kill_on_drop: false }`
[INFO] [stdout] fa64c646a2f9e952c45668e6b92010b776cf82a76f1434d689b8a5a4c88a1391
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afc95886f92f38f71fdb7c6a45672583a83ae3d59129ab55bce79b2aa027711a
[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" "afc95886f92f38f71fdb7c6a45672583a83ae3d59129ab55bce79b2aa027711a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling collect-mac v0.1.0
[INFO] [stderr]    Compiling gluon_vm v0.17.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling frunk_core v0.3.1
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling archery v0.3.0
[INFO] [stderr]    Compiling codespan v0.9.5
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling ordered-float v2.0.1
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling gluon_codegen v0.17.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling rpds v0.7.0
[INFO] [stderr]    Compiling gluon_base v0.17.2
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling gluon_check v0.17.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 38s
[INFO] running `Command { std: "docker" "inspect" "afc95886f92f38f71fdb7c6a45672583a83ae3d59129ab55bce79b2aa027711a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afc95886f92f38f71fdb7c6a45672583a83ae3d59129ab55bce79b2aa027711a", kill_on_drop: false }`
[INFO] [stdout] afc95886f92f38f71fdb7c6a45672583a83ae3d59129ab55bce79b2aa027711a
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87a94821e5e618cae5f24922b2af50302a5d3beb785a9212bb7da2aa69cf8b60
[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" "87a94821e5e618cae5f24922b2af50302a5d3beb785a9212bb7da2aa69cf8b60", kill_on_drop: false }`
[INFO] [stderr]    Compiling gluon_vm v0.17.2
[INFO] [stderr]    Compiling gluon-salsa-macros v0.15.2
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[INFO] [stderr]    Compiling lalrpop v0.19.3
[INFO] [stderr]    Compiling gluon v0.17.2
[INFO] [stderr]    Compiling gluon_format v0.17.2
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling gluon-salsa v0.15.2
[INFO] [stderr]    Compiling gluon_parser v0.17.2
[INFO] [stderr]    Compiling gluon_vm v0.17.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read /opt/rustwide/target/debug/build/gluon_vm-8301cb8b1c15a93b/out/core/grammar.rs: No such file or directory (os error 2)
[INFO] [stdout]   --> src/core/mod.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / lalrpop_util::lalrpop_mod!(
[INFO] [stdout] 22 | |     #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stdout] 23 | |     #[allow(unused_parens)]
[INFO] [stdout] 24 | |     pub grammar,
[INFO] [stdout] 25 | |     "/core/grammar.rs"
[INFO] [stdout] 26 | | );
[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 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gluon_vm`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "87a94821e5e618cae5f24922b2af50302a5d3beb785a9212bb7da2aa69cf8b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87a94821e5e618cae5f24922b2af50302a5d3beb785a9212bb7da2aa69cf8b60", kill_on_drop: false }`
[INFO] [stdout] 87a94821e5e618cae5f24922b2af50302a5d3beb785a9212bb7da2aa69cf8b60