[INFO] cloning repository https://github.com/matsu7874/ferris_watch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matsu7874/ferris_watch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatsu7874%2Fferris_watch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatsu7874%2Fferris_watch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 916d3f2797b810b33b00afa77483a639cf1d85b0
[INFO] checking matsu7874/ferris_watch against master#893fadd11a52aa26fc19c67ee1b79f03d6a1bed3 for pr-77153
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatsu7874%2Fferris_watch" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matsu7874/ferris_watch on toolchain 893fadd11a52aa26fc19c67ee1b79f03d6a1bed3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matsu7874/ferris_watch
[INFO] finished tweaking git repo https://github.com/matsu7874/ferris_watch
[INFO] tweaked toml for git repo https://github.com/matsu7874/ferris_watch written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/matsu7874/ferris_watch already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "fetch" "--locked" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pkg-config v0.3.17
[INFO] [stderr]   Downloaded cfg-if v0.1.10
[INFO] [stderr]   Downloaded termcolor v1.1.0
[INFO] [stderr]   Downloaded log v0.4.8
[INFO] [stderr]   Downloaded unicode-xid v0.2.0
[INFO] [stderr]   Downloaded thread_local v1.0.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.9
[INFO] [stderr]   Downloaded winapi-util v0.1.3
[INFO] [stderr]   Downloaded ncurses v5.99.0
[INFO] [stderr]   Downloaded bitflags v1.2.1
[INFO] [stderr]   Downloaded lazy_static v1.4.0
[INFO] [stderr]   Downloaded atty v0.2.14
[INFO] [stderr]   Downloaded signal-hook-registry v1.2.0
[INFO] [stderr]   Downloaded quick-error v1.2.3
[INFO] [stderr]   Downloaded strsim v0.8.0
[INFO] [stderr]   Downloaded textwrap v0.11.0
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded unicode-width v0.1.7
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded quote v1.0.3
[INFO] [stderr]   Downloaded hermit-abi v0.1.8
[INFO] [stderr]   Downloaded signal-hook v0.1.13
[INFO] [stderr]   Downloaded failure_derive v0.1.7
[INFO] [stderr]   Downloaded aho-corasick v0.7.9
[INFO] [stderr]   Downloaded arc-swap v0.4.4
[INFO] [stderr]   Downloaded failure v0.1.7
[INFO] [stderr]   Downloaded winreg v0.5.1
[INFO] [stderr]   Downloaded pdcurses-sys v0.7.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.16
[INFO] [stderr]   Downloaded backtrace v0.3.45
[INFO] [stderr]   Downloaded syn v1.0.16
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded backtrace-sys v0.1.33
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] [stderr]   Downloaded regex v1.3.4
[INFO] [stderr]   Downloaded libc v0.2.67
[INFO] [stderr]   Downloaded rustc-demangle v0.1.16
[INFO] [stderr]   Downloaded synstructure v0.12.3
[INFO] [stderr]   Downloaded pancurses v0.16.1
[INFO] [stderr]   Downloaded humantime v1.3.0
[INFO] [stderr]   Downloaded env_logger v0.7.1
[INFO] [stderr]   Downloaded cc v1.0.50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a767f81f8161f9bb44b181f797235577afe68b405cafeeb64e33dc4256ad52ca
[INFO] running `Command { std: "docker" "start" "-a" "a767f81f8161f9bb44b181f797235577afe68b405cafeeb64e33dc4256ad52ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a767f81f8161f9bb44b181f797235577afe68b405cafeeb64e33dc4256ad52ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a767f81f8161f9bb44b181f797235577afe68b405cafeeb64e33dc4256ad52ca", kill_on_drop: false }`
[INFO] [stdout] a767f81f8161f9bb44b181f797235577afe68b405cafeeb64e33dc4256ad52ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90549c0b8cf11383e98bafb162be9cab4084bc4c23635d8399780bbd122f86bd
[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" "90549c0b8cf11383e98bafb162be9cab4084bc4c23635d8399780bbd122f86bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking regex-syntax v0.6.16
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.9
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.33
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]     Checking pancurses v0.16.1
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking ferris_watch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.56s
[INFO] running `Command { std: "docker" "inspect" "90549c0b8cf11383e98bafb162be9cab4084bc4c23635d8399780bbd122f86bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90549c0b8cf11383e98bafb162be9cab4084bc4c23635d8399780bbd122f86bd", kill_on_drop: false }`
[INFO] [stdout] 90549c0b8cf11383e98bafb162be9cab4084bc4c23635d8399780bbd122f86bd