[INFO] fetching crate stakker 0.2.4...
[INFO] building stakker-0.2.4 against try#d5c88c22807925c189328ef9d923c5d2b11a95b8+rustflags=-Zprofile-closures for pr-87066-3
[INFO] extracting crate stakker 0.2.4 into /workspace/builds/worker-72/source
[INFO] validating manifest of crates.io crate stakker 0.2.4 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stakker 0.2.4
[INFO] finished tweaking crates.io crate stakker 0.2.4
[INFO] tweaked toml for crates.io crate stakker 0.2.4 written to /workspace/builds/worker-72/source/Cargo.toml
[INFO] crate crates.io crate stakker 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anymap v0.12.1
[INFO] [stderr]   Downloaded qcell v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89353f083e2aff5f44f7e68a1a8e98c3d6fcbe0d16e3a6e2a800f4204c8dc99d
[INFO] running `Command { std: "docker" "start" "-a" "89353f083e2aff5f44f7e68a1a8e98c3d6fcbe0d16e3a6e2a800f4204c8dc99d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89353f083e2aff5f44f7e68a1a8e98c3d6fcbe0d16e3a6e2a800f4204c8dc99d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89353f083e2aff5f44f7e68a1a8e98c3d6fcbe0d16e3a6e2a800f4204c8dc99d", kill_on_drop: false }`
[INFO] [stdout] 89353f083e2aff5f44f7e68a1a8e98c3d6fcbe0d16e3a6e2a800f4204c8dc99d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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 -Zprofile-closures" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c98fb7fe58d484c9ce59d2e40cd12116012088ad83d2c45a3b0e13f0107da4d
[INFO] running `Command { std: "docker" "start" "-a" "9c98fb7fe58d484c9ce59d2e40cd12116012088ad83d2c45a3b0e13f0107da4d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling qcell v0.4.1
[INFO] [stderr] SG_CR_Eslkdjf: qcell, (c6eea311cab31450, 9d19dc47537e6d77), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: qcell, (2f30458192316c7c, 621e3150178b387f), 0, 0
[INFO] [stderr]    Compiling stakker v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (7662e76719478c6d, ae4b60a2fc17b055), 16, 16
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (209a1155d8acd34a, 3a4d8a581bfc50b3), 96, 80
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (385c72e1e8135d94, 76ae85b9f33c68c), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (385c72e1e8135d94, 76ae85b9f33c68c), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (5a08bd813df4fd3d, 9677aea60cdd8f4f), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (9098c3466ddde11b, cf9d2f4e04ede97e), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (385c72e1e8135d94, 76ae85b9f33c68c), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (408eca226cdf5ec4, 53c86f8d74a0576a), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (ae6d2171a9fbcf50, c4abb524ceff9a2f), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (53aff71ba0793101, 7f7ccd1f1fe78a56), 16, 16
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (e422402db9a5ad93, cf975cd3eefcceec), 16, 16
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (360faec5d08d12c9, c6fd6e166101791f), 16, 16
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (7c86fc3641fecb44, bc6d68ef83a8ba3), 24, 24
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (744f38b2c5a77805, 4dcc0b75fda946e4), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (735e7e1df4311a1a, eec4f3b75e1684f5), 16, 16
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (38d4bbb6f6931a8e, 5ba5ca66faba1518), 16, 16
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (413c91e4931fd8fa, 8ca8b1dba3a1a999), 24, 24
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (38298e9f4215116b, 454df42445d0e434), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (3a42cd8b0ea3c6cc, 22b081c84aa9e295), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (6604b697d4f001a1, b76c6b82f3ca38ec), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (91c2b5dbdd2af1c5, 220ec421dc869d5a), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (eddfc3cc46387f08, 44e94aa1f11296f8), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (a461ff973cd43b35, 2d31d0a5a05b00e8), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (8b67a6317e48fc65, 72317ee027f46076), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (bb1da9a624806c26, 5aaaa241ab3af315), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (d9570479f0e18367, ace03af4be24e5e2), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (de822fa591e8b7a6, 21acabbed2396740), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (154c3f8df125f6f, ce1d324cf87a1a07), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (42932432ca26cc5e, 2193495eea772706), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (bb69c61813bf802, f1f806d1ecdc3b9c), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (1d7914a722de17d2, bf0ef817de3b04bd), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (ad89ad74de137565, f5ff36d8b75fddfa), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (9174983d7fba6605, f579d058dead543a), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (9e9624bf6f25c8a7, 2fb94d86fbfa8805), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (ad6216a5f768882d, 80bc273b6be634bc), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (e908f7d754e3f818, 53c72b1a27524844), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (ee5e02930292069d, 54cc9b352b14df43), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (8d899f9932990267, c13a3a62fe859d50), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: stakker, (ce68317d18270d17, 48ba49aa7fae5211), 0, 0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "9c98fb7fe58d484c9ce59d2e40cd12116012088ad83d2c45a3b0e13f0107da4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c98fb7fe58d484c9ce59d2e40cd12116012088ad83d2c45a3b0e13f0107da4d", kill_on_drop: false }`
[INFO] [stdout] 9c98fb7fe58d484c9ce59d2e40cd12116012088ad83d2c45a3b0e13f0107da4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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 -Zprofile-closures" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d25922dbc2853424394d3090f444edab6d786fde290ed2f66e89a2dd667ab0dd
[INFO] running `Command { std: "docker" "start" "-a" "d25922dbc2853424394d3090f444edab6d786fde290ed2f66e89a2dd667ab0dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "d25922dbc2853424394d3090f444edab6d786fde290ed2f66e89a2dd667ab0dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d25922dbc2853424394d3090f444edab6d786fde290ed2f66e89a2dd667ab0dd", kill_on_drop: false }`
[INFO] [stdout] d25922dbc2853424394d3090f444edab6d786fde290ed2f66e89a2dd667ab0dd