[INFO] fetching crate mathru 0.7.3...
[INFO] checking mathru-0.7.3 against beta for pr-78714
[INFO] extracting crate mathru 0.7.3 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mathru 0.7.3 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 mathru 0.7.3
[INFO] finished tweaking crates.io crate mathru 0.7.3
[INFO] tweaked toml for crates.io crate mathru 0.7.3 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate mathru 0.7.3 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] 7856e363703f87cf051121ed7cc1a6d1365ba74d77efb1aa79633b005c1b060f
[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" "7856e363703f87cf051121ed7cc1a6d1365ba74d77efb1aa79633b005c1b060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7856e363703f87cf051121ed7cc1a6d1365ba74d77efb1aa79633b005c1b060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7856e363703f87cf051121ed7cc1a6d1365ba74d77efb1aa79633b005c1b060f", kill_on_drop: false }`
[INFO] [stdout] 7856e363703f87cf051121ed7cc1a6d1365ba74d77efb1aa79633b005c1b060f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 1ec68ad0e8cc34e6fd04f4c6809c5a8ca39890be2f729d236ddaf9c80de8cd17
[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" "1ec68ad0e8cc34e6fd04f4c6809c5a8ca39890be2f729d236ddaf9c80de8cd17", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.56
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking adler32 v1.1.0
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]     Checking bytemuck v1.2.0
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking plotters-svg v0.3.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking jpeg-decoder v0.1.19
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking deflate v0.8.4
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking png v0.16.6
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]     Checking rayon v1.2.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking num-rational v0.2.3
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking font-kit v0.7.1
[INFO] [stderr]     Checking simba v0.2.0
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]     Checking image v0.23.6
[INFO] [stderr]     Checking nalgebra v0.22.0
[INFO] [stderr]     Checking plotters-bitmap v0.3.0
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking mathru v0.7.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking tinytemplate v1.0.1
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.45s
[INFO] running `Command { std: "docker" "inspect" "1ec68ad0e8cc34e6fd04f4c6809c5a8ca39890be2f729d236ddaf9c80de8cd17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ec68ad0e8cc34e6fd04f4c6809c5a8ca39890be2f729d236ddaf9c80de8cd17", kill_on_drop: false }`
[INFO] [stdout] 1ec68ad0e8cc34e6fd04f4c6809c5a8ca39890be2f729d236ddaf9c80de8cd17