[INFO] fetching crate graviton_backend 0.6.0...
[INFO] checking graviton_backend-0.6.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate graviton_backend 0.6.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate graviton_backend 0.6.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate graviton_backend 0.6.0
[INFO] finished tweaking crates.io crate graviton_backend 0.6.0
[INFO] tweaked toml for crates.io crate graviton_backend 0.6.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded erased-serde v0.3.12
[INFO] [stderr]   Downloaded plain v0.2.3
[INFO] [stderr]   Downloaded inventory-impl v0.1.9
[INFO] [stderr]   Downloaded scroll_derive v0.10.4
[INFO] [stderr]   Downloaded scroll v0.10.2
[INFO] [stderr]   Downloaded ghost v0.1.2
[INFO] [stderr]   Downloaded faerie v0.14.0
[INFO] [stderr]   Downloaded inventory v0.1.9
[INFO] [stderr]   Downloaded typetag-impl v0.1.6
[INFO] [stderr]   Downloaded string-interner v0.7.1
[INFO] [stderr]   Downloaded cranelift-faerie v0.56.0
[INFO] [stderr]   Downloaded typetag v0.1.6
[INFO] [stderr]   Downloaded cranelift v0.56.0
[INFO] [stderr]   Downloaded target-lexicon v0.10.0
[INFO] [stderr]   Downloaded goblin v0.1.3
[INFO] [stderr]   Downloaded raw-cpuid v7.0.3
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.56.0
[INFO] [stderr]   Downloaded crc16 v0.4.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.56.0
[INFO] [stderr]   Downloaded cranelift-native v0.56.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.56.0
[INFO] [stderr]   Downloaded cranelift-entity v0.56.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.56.0
[INFO] [stderr]   Downloaded cranelift-module v0.56.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.56.0
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", 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] 904ededbb6c5fc4eff598065d93cdbda041c9e5916c850ad3c1cef1bb17f8405
[INFO] running `Command { std: "docker" "start" "-a" "904ededbb6c5fc4eff598065d93cdbda041c9e5916c850ad3c1cef1bb17f8405", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "904ededbb6c5fc4eff598065d93cdbda041c9e5916c850ad3c1cef1bb17f8405", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "904ededbb6c5fc4eff598065d93cdbda041c9e5916c850ad3c1cef1bb17f8405", kill_on_drop: false }`
[INFO] [stdout] 904ededbb6c5fc4eff598065d93cdbda041c9e5916c850ad3c1cef1bb17f8405
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b14d24bdcdfa58ae1b3223881f8dd3d8ca4c599907469f292916a6c936dba79
[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" "5b14d24bdcdfa58ae1b3223881f8dd3d8ca4c599907469f292916a6c936dba79", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling cranelift-entity v0.56.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.56.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling inventory v0.1.9
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.56.0
[INFO] [stderr]     Checking cranelift-bforest v0.56.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking anyhow v1.0.35
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling scroll_derive v0.10.4
[INFO] [stderr]    Compiling inventory-impl v0.1.9
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling ctor v0.1.16
[INFO] [stderr]    Compiling typetag-impl v0.1.6
[INFO] [stderr]    Compiling cranelift-codegen v0.56.0
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking goblin v0.1.3
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking string-interner v0.7.1
[INFO] [stderr]     Checking graviton_core v0.6.0
[INFO] [stderr]     Checking erased-serde v0.3.12
[INFO] [stderr]     Checking graviton_ast v0.6.0
[INFO] [stderr]     Checking faerie v0.14.0
[INFO] [stderr]     Checking typetag v0.1.6
[INFO] [stderr]     Checking cranelift-module v0.56.0
[INFO] [stderr]     Checking cranelift-frontend v0.56.0
[INFO] [stderr]     Checking cranelift-native v0.56.0
[INFO] [stderr]     Checking cranelift-faerie v0.56.0
[INFO] [stderr]     Checking cranelift v0.56.0
[INFO] [stderr]     Checking graviton_backend v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 27s
[INFO] running `Command { std: "docker" "inspect" "5b14d24bdcdfa58ae1b3223881f8dd3d8ca4c599907469f292916a6c936dba79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b14d24bdcdfa58ae1b3223881f8dd3d8ca4c599907469f292916a6c936dba79", kill_on_drop: false }`
[INFO] [stdout] 5b14d24bdcdfa58ae1b3223881f8dd3d8ca4c599907469f292916a6c936dba79