[INFO] updating cached repository https://github.com/DoumanAsh/grep_vn_walk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a25bc2be183286fab712fda25c6ff60958152422
[INFO] testing DoumanAsh/grep_vn_walk against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDoumanAsh%2Fgrep_vn_walk" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DoumanAsh/grep_vn_walk on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DoumanAsh/grep_vn_walk
[INFO] finished tweaking git repo https://github.com/DoumanAsh/grep_vn_walk
[INFO] tweaked toml for git repo https://github.com/DoumanAsh/grep_vn_walk written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/DoumanAsh/grep_vn_walk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60c3ccbdb69e5412e26c1ee8d924e1b1449c75daeb2dfc8465de82879a68633f
[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" "60c3ccbdb69e5412e26c1ee8d924e1b1449c75daeb2dfc8465de82879a68633f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60c3ccbdb69e5412e26c1ee8d924e1b1449c75daeb2dfc8465de82879a68633f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60c3ccbdb69e5412e26c1ee8d924e1b1449c75daeb2dfc8465de82879a68633f", kill_on_drop: false }`
[INFO] [stdout] 60c3ccbdb69e5412e26c1ee8d924e1b1449c75daeb2dfc8465de82879a68633f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a995dd3132744730351f97f47f8432b171a7941b22c1de3976139365f4b49c5d
[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" "a995dd3132744730351f97f47f8432b171a7941b22c1de3976139365f4b49c5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling cc v1.0.23
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling untrusted v0.6.2
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling serde v1.0.75
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling string v0.1.1
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling regex v1.0.4
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling etag v1.0.2
[INFO] [stderr]    Compiling data-encoding v2.1.1
[INFO] [stderr]    Compiling lazy-panic v0.3.2
[INFO] [stderr]    Compiling log v0.4.4
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling tokio-executor v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling memchr v2.0.2
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling base64 v0.9.2
[INFO] [stderr]    Compiling bytes v0.4.9
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling tokio-timer v0.2.6
[INFO] [stderr]    Compiling tokio-current-thread v0.1.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling aho-corasick v0.6.8
[INFO] [stderr]    Compiling lock_api v0.1.3
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]    Compiling smallvec v0.6.5
[INFO] [stderr]    Compiling cookie v0.11.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling tokio-io v0.1.8
[INFO] [stderr]    Compiling http v0.1.10
[INFO] [stderr]    Compiling parking_lot_core v0.3.0
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling mime v0.3.9
[INFO] [stderr]    Compiling crossbeam-deque v0.6.1
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling phf v0.7.23
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]    Compiling tokio-threadpool v0.1.6
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling mio-uds v0.6.6
[INFO] [stderr]    Compiling tokio-reactor v0.1.5
[INFO] [stderr]    Compiling ring v0.13.2
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling url v1.7.1
[INFO] [stderr]    Compiling tokio-fs v0.1.3
[INFO] [stderr]    Compiling tokio-tcp v0.1.1
[INFO] [stderr]    Compiling tokio-uds v0.2.1
[INFO] [stderr]    Compiling tokio-udp v0.1.2
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling tokio v0.1.8
[INFO] [stderr]    Compiling flate2 v1.0.2
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling h2 v0.1.12
[INFO] [stderr]    Compiling webpki v0.18.1
[INFO] [stderr]    Compiling sct v0.4.0
[INFO] [stderr]    Compiling hyper v0.12.9
[INFO] [stderr]    Compiling ct-logs v0.4.0
[INFO] [stderr]    Compiling rustls v0.13.1
[INFO] [stderr]    Compiling webpki-roots v0.15.0
[INFO] [stderr]    Compiling serde_json v1.0.26
[INFO] [stderr]    Compiling serde_urlencoded v0.5.3
[INFO] [stderr]    Compiling tokio-rustls v0.7.2
[INFO] [stderr]    Compiling hyper-rustls v0.14.0
[INFO] [stderr]    Compiling yukikaze v0.2.0
[INFO] [stderr]    Compiling grep_vn_walk v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 47s
[INFO] running `Command { std: "docker" "inspect" "a995dd3132744730351f97f47f8432b171a7941b22c1de3976139365f4b49c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a995dd3132744730351f97f47f8432b171a7941b22c1de3976139365f4b49c5d", kill_on_drop: false }`
[INFO] [stdout] a995dd3132744730351f97f47f8432b171a7941b22c1de3976139365f4b49c5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d28de7596137f16b0e3c0c00fd2061dda682c89f02d552dd3822fa65a5faf37
[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" "8d28de7596137f16b0e3c0c00fd2061dda682c89f02d552dd3822fa65a5faf37", kill_on_drop: false }`
[INFO] [stderr]    Compiling grep_vn_walk v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "8d28de7596137f16b0e3c0c00fd2061dda682c89f02d552dd3822fa65a5faf37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d28de7596137f16b0e3c0c00fd2061dda682c89f02d552dd3822fa65a5faf37", kill_on_drop: false }`
[INFO] [stdout] 8d28de7596137f16b0e3c0c00fd2061dda682c89f02d552dd3822fa65a5faf37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", 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] 13961e09bb71569153bfc9a926f96bb024e2525f00e25273d7f0515f8fe09a3c
[INFO] running `Command { std: "docker" "start" "-a" "13961e09bb71569153bfc9a926f96bb024e2525f00e25273d7f0515f8fe09a3c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/grep_vn_walk-53296e611262df88
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "13961e09bb71569153bfc9a926f96bb024e2525f00e25273d7f0515f8fe09a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13961e09bb71569153bfc9a926f96bb024e2525f00e25273d7f0515f8fe09a3c", kill_on_drop: false }`
[INFO] [stdout] 13961e09bb71569153bfc9a926f96bb024e2525f00e25273d7f0515f8fe09a3c