[INFO] fetching crate structured 0.2.0...
[INFO] checking structured-0.2.0 against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] extracting crate structured 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate structured 0.2.0 on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate structured 0.2.0
[INFO] finished tweaking crates.io crate structured 0.2.0
[INFO] tweaked toml for crates.io crate structured 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 030c3c38571822529ff2e6c103a997fc5b6def7a71d3c5c5f9fddf96df5866e3
[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" "030c3c38571822529ff2e6c103a997fc5b6def7a71d3c5c5f9fddf96df5866e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "030c3c38571822529ff2e6c103a997fc5b6def7a71d3c5c5f9fddf96df5866e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030c3c38571822529ff2e6c103a997fc5b6def7a71d3c5c5f9fddf96df5866e3", kill_on_drop: false }`
[INFO] [stdout] 030c3c38571822529ff2e6c103a997fc5b6def7a71d3c5c5f9fddf96df5866e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cce0728faf99eda5f9cb450ac12cedd5251d9cea524c8bd915241b45f51dcb2
[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" "1cce0728faf99eda5f9cb450ac12cedd5251d9cea524c8bd915241b45f51dcb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking strum v0.18.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking dashmap v3.11.7
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking statistical v1.0.0
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking structured v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.80s
[INFO] running `Command { std: "docker" "inspect" "1cce0728faf99eda5f9cb450ac12cedd5251d9cea524c8bd915241b45f51dcb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cce0728faf99eda5f9cb450ac12cedd5251d9cea524c8bd915241b45f51dcb2", kill_on_drop: false }`
[INFO] [stdout] 1cce0728faf99eda5f9cb450ac12cedd5251d9cea524c8bd915241b45f51dcb2