[INFO] cloning repository https://github.com/Licenser/nested-executors
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Licenser/nested-executors" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Fnested-executors", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Fnested-executors'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d36e9e1a6882b324f7e686e17964d1dc373e1f59
[INFO] checking Licenser/nested-executors against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Fnested-executors" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Licenser/nested-executors on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Licenser/nested-executors
[INFO] finished tweaking git repo https://github.com/Licenser/nested-executors
[INFO] tweaked toml for git repo https://github.com/Licenser/nested-executors written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Licenser/nested-executors already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scoped-tls-hkt v0.1.2
[INFO] [stderr]   Downloaded wepoll-binding v2.0.2
[INFO] [stderr]   Downloaded piper v0.1.2
[INFO] [stderr]   Downloaded wepoll-sys v2.0.0
[INFO] [stderr]   Downloaded syn v1.0.25
[INFO] [stderr]   Downloaded async-std v1.6.0
[INFO] [stderr]   Downloaded smol v0.1.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 310b413c4b256a37aa2abe39994f8e5ec65b100d2a9377cf55b0c3ce1e0986cd
[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" "310b413c4b256a37aa2abe39994f8e5ec65b100d2a9377cf55b0c3ce1e0986cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "310b413c4b256a37aa2abe39994f8e5ec65b100d2a9377cf55b0c3ce1e0986cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "310b413c4b256a37aa2abe39994f8e5ec65b100d2a9377cf55b0c3ce1e0986cd", kill_on_drop: false }`
[INFO] [stdout] 310b413c4b256a37aa2abe39994f8e5ec65b100d2a9377cf55b0c3ce1e0986cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0feb92a462ee1dd884fe279fe999e03c9f310a10fc11d2312a685654c207b866
[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" "0feb92a462ee1dd884fe279fe999e03c9f310a10fc11d2312a685654c207b866", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.25
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking scoped-tls-hkt v0.1.2
[INFO] [stderr]     Checking pin-project-lite v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking kv-log-macro v1.0.6
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[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 smol v0.1.10
[INFO] [stderr]     Checking async-std v1.6.0
[INFO] [stderr]     Checking nested-executors v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.79s
[INFO] running `Command { std: "docker" "inspect" "0feb92a462ee1dd884fe279fe999e03c9f310a10fc11d2312a685654c207b866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0feb92a462ee1dd884fe279fe999e03c9f310a10fc11d2312a685654c207b866", kill_on_drop: false }`
[INFO] [stdout] 0feb92a462ee1dd884fe279fe999e03c9f310a10fc11d2312a685654c207b866