[INFO] fetching crate rstb 0.1.4...
[INFO] checking rstb-0.1.4 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate rstb 0.1.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rstb 0.1.4 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rstb 0.1.4
[INFO] finished tweaking crates.io crate rstb 0.1.4
[INFO] tweaked toml for crates.io crate rstb 0.1.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "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] 95557073d7dca705c39e76f9d650fc593ea7951a44d03f4162d60932e0f1b383
[INFO] running `Command { std: "docker" "start" "-a" "95557073d7dca705c39e76f9d650fc593ea7951a44d03f4162d60932e0f1b383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95557073d7dca705c39e76f9d650fc593ea7951a44d03f4162d60932e0f1b383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95557073d7dca705c39e76f9d650fc593ea7951a44d03f4162d60932e0f1b383", kill_on_drop: false }`
[INFO] [stdout] 95557073d7dca705c39e76f9d650fc593ea7951a44d03f4162d60932e0f1b383
[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" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff91f86dffe0b3733a6aee33e35519871914cd04b59437c3b053685e9492040b
[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" "ff91f86dffe0b3733a6aee33e35519871914cd04b59437c3b053685e9492040b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking arrayvec v0.4.12
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking yaz0 v0.1.2
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking parse_int v0.4.0
[INFO] [stderr]    Compiling darling_core v0.10.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling binwrite_derive v0.2.1
[INFO] [stderr]    Compiling binread_derive v1.4.2
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling darling_macro v0.10.3
[INFO] [stderr]    Compiling darling v0.10.3
[INFO] [stderr]    Compiling cached_proc_macro v0.4.0
[INFO] [stderr]     Checking binwrite v0.2.1
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking binread v1.4.1
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking cached v0.20.0
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking rstb v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 27s
[INFO] running `Command { std: "docker" "inspect" "ff91f86dffe0b3733a6aee33e35519871914cd04b59437c3b053685e9492040b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff91f86dffe0b3733a6aee33e35519871914cd04b59437c3b053685e9492040b", kill_on_drop: false }`
[INFO] [stdout] ff91f86dffe0b3733a6aee33e35519871914cd04b59437c3b053685e9492040b