[INFO] cloning repository https://github.com/YangKeao/mntexec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/YangKeao/mntexec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangKeao%2Fmntexec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangKeao%2Fmntexec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9d6e1e001fa737e9263409df27abc1c45e5c4b6
[INFO] checking YangKeao/mntexec against master#43d9f3859e0204e764161ee085a360274b5f3e9a for pr-97346
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYangKeao%2Fmntexec" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/YangKeao/mntexec on toolchain 43d9f3859e0204e764161ee085a360274b5f3e9a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-17/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/YangKeao/mntexec
[INFO] finished tweaking git repo https://github.com/YangKeao/mntexec
[INFO] tweaked toml for git repo https://github.com/YangKeao/mntexec written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/YangKeao/mntexec already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded command-fds v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9841652d2367fd75a6c19535ec103e4ec5f65965d0357c34760255b732d24c3
[INFO] running `Command { std: "docker" "start" "-a" "f9841652d2367fd75a6c19535ec103e4ec5f65965d0357c34760255b732d24c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9841652d2367fd75a6c19535ec103e4ec5f65965d0357c34760255b732d24c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9841652d2367fd75a6c19535ec103e4ec5f65965d0357c34760255b732d24c3", kill_on_drop: false }`
[INFO] [stdout] f9841652d2367fd75a6c19535ec103e4ec5f65965d0357c34760255b732d24c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f82fc5be5886e5d2198fa1fb8dfc546a64f549ed75d7b43395f6e296de39ea2
[INFO] running `Command { std: "docker" "start" "-a" "5f82fc5be5886e5d2198fa1fb8dfc546a64f549ed75d7b43395f6e296de39ea2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.51
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.19.0
[INFO] [stderr]     Checking nix v0.22.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling ctor v0.1.16
[INFO] [stderr]     Checking nsenter v0.1.0 (/opt/rustwide/workdir/nsenter)
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking command-fds v0.2.1
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking nsexec v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.75s
[INFO] running `Command { std: "docker" "inspect" "5f82fc5be5886e5d2198fa1fb8dfc546a64f549ed75d7b43395f6e296de39ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f82fc5be5886e5d2198fa1fb8dfc546a64f549ed75d7b43395f6e296de39ea2", kill_on_drop: false }`
[INFO] [stdout] 5f82fc5be5886e5d2198fa1fb8dfc546a64f549ed75d7b43395f6e296de39ea2