[INFO] fetching crate cargo-mutants 0.2.6...
[INFO] documenting cargo-mutants-0.2.6 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate cargo-mutants 0.2.6 into /workspace/builds/worker-111/source
[INFO] validating manifest of crates.io crate cargo-mutants 0.2.6 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-mutants 0.2.6
[INFO] finished tweaking crates.io crate cargo-mutants 0.2.6
[INFO] tweaked toml for crates.io crate cargo-mutants 0.2.6 written to /workspace/builds/worker-111/source/Cargo.toml
[INFO] crate crates.io crate cargo-mutants 0.2.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eea8f63fe64d6539b998dc8434458c77868e643baf04cd6c01846996b7c4c13b
[INFO] running `Command { std: "docker" "start" "-a" "eea8f63fe64d6539b998dc8434458c77868e643baf04cd6c01846996b7c4c13b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eea8f63fe64d6539b998dc8434458c77868e643baf04cd6c01846996b7c4c13b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eea8f63fe64d6539b998dc8434458c77868e643baf04cd6c01846996b7c4c13b", kill_on_drop: false }`
[INFO] [stdout] eea8f63fe64d6539b998dc8434458c77868e643baf04cd6c01846996b7c4c13b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3056d0b8adee9c2c69431950256714934999cd13220dff8cf6e1dce6c275160a
[INFO] running `Command { std: "docker" "start" "-a" "3056d0b8adee9c2c69431950256714934999cd13220dff8cf6e1dce6c275160a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling camino v1.0.7
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling argh_shared v0.1.7
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking whoami v1.2.1
[INFO] [stderr]     Checking similar v2.1.0
[INFO] [stderr]     Checking path-slash v0.1.4
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking subprocess v0.2.8
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking cp_r v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking nutmeg v0.1.1
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ctrlc v3.2.1
[INFO] [stderr]    Compiling argh_derive v0.1.7
[INFO] [stderr]     Checking argh v0.1.7
[INFO] [stderr]     Checking cargo-platform v0.1.2
[INFO] [stderr]     Checking cargo_metadata v0.14.2
[INFO] [stderr]  Documenting cargo-mutants v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.28s
[INFO] running `Command { std: "docker" "inspect" "3056d0b8adee9c2c69431950256714934999cd13220dff8cf6e1dce6c275160a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3056d0b8adee9c2c69431950256714934999cd13220dff8cf6e1dce6c275160a", kill_on_drop: false }`
[INFO] [stdout] 3056d0b8adee9c2c69431950256714934999cd13220dff8cf6e1dce6c275160a