[INFO] fetching crate rkm 0.8.1...
[INFO] checking rkm-0.8.1 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate rkm 0.8.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rkm 0.8.1 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rkm 0.8.1
[INFO] finished tweaking crates.io crate rkm 0.8.1
[INFO] tweaked toml for crates.io crate rkm 0.8.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate rkm 0.8.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bencher v0.1.5
[INFO] [stderr]   Downloaded ndarray v0.12.1
[INFO] [stderr]   Downloaded ndarray-parallel v0.9.1
[INFO] [stderr]   Downloaded num-bigint v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d4065612a1e95b48aef4b2acb2394f644de3ce3ca58eacf358ded9004a9f2d5
[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" "3d4065612a1e95b48aef4b2acb2394f644de3ce3ca58eacf358ded9004a9f2d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d4065612a1e95b48aef4b2acb2394f644de3ce3ca58eacf358ded9004a9f2d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d4065612a1e95b48aef4b2acb2394f644de3ce3ca58eacf358ded9004a9f2d5", kill_on_drop: false }`
[INFO] [stdout] 3d4065612a1e95b48aef4b2acb2394f644de3ce3ca58eacf358ded9004a9f2d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 319f3fdc5a5d81627439d5f265318bdc6dbe2ae3c260b46c45372759ec1bdba7
[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" "319f3fdc5a5d81627439d5f265318bdc6dbe2ae3c260b46c45372759ec1bdba7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-bigint v0.2.5
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking bstr v0.2.9
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking rkm v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.99s
[INFO] running `Command { std: "docker" "inspect" "319f3fdc5a5d81627439d5f265318bdc6dbe2ae3c260b46c45372759ec1bdba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "319f3fdc5a5d81627439d5f265318bdc6dbe2ae3c260b46c45372759ec1bdba7", kill_on_drop: false }`
[INFO] [stdout] 319f3fdc5a5d81627439d5f265318bdc6dbe2ae3c260b46c45372759ec1bdba7