[INFO] fetching crate benchrs 0.1.7...
[INFO] checking benchrs-0.1.7 against beta for pr-78714
[INFO] extracting crate benchrs 0.1.7 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate benchrs 0.1.7 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate benchrs 0.1.7
[INFO] finished tweaking crates.io crate benchrs 0.1.7
[INFO] tweaked toml for crates.io crate benchrs 0.1.7 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate benchrs 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 91be67bb7bdd021aedee10f2b728b35469cccafcf3ac6716e72da7a332487ee9
[INFO] running `Command { std: "docker" "start" "-a" "91be67bb7bdd021aedee10f2b728b35469cccafcf3ac6716e72da7a332487ee9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91be67bb7bdd021aedee10f2b728b35469cccafcf3ac6716e72da7a332487ee9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91be67bb7bdd021aedee10f2b728b35469cccafcf3ac6716e72da7a332487ee9", kill_on_drop: false }`
[INFO] [stdout] 91be67bb7bdd021aedee10f2b728b35469cccafcf3ac6716e72da7a332487ee9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0bfd513d9ad74f8786121826c2138916251516727bf39fef3258338ce6c20d7
[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" "a0bfd513d9ad74f8786121826c2138916251516727bf39fef3258338ce6c20d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling proc-macro2 v1.0.15
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking scoped-tls-hkt v0.1.2
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking galvanic-test v0.2.0
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling openssl-sys v0.9.56
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking simplelog v0.8.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking mktemp v0.4.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking pin-project v0.4.17
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking piper v0.1.2
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking smol v0.1.10
[INFO] [stderr]     Checking async-std v1.6.0
[INFO] [stderr]     Checking async-native-tls v0.3.3
[INFO] [stderr]     Checking benchrs v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.81s
[INFO] running `Command { std: "docker" "inspect" "a0bfd513d9ad74f8786121826c2138916251516727bf39fef3258338ce6c20d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0bfd513d9ad74f8786121826c2138916251516727bf39fef3258338ce6c20d7", kill_on_drop: false }`
[INFO] [stdout] a0bfd513d9ad74f8786121826c2138916251516727bf39fef3258338ce6c20d7