[INFO] cloning repository https://github.com/facebookincubator/fastmod
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/facebookincubator/fastmod" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffacebookincubator%2Ffastmod", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffacebookincubator%2Ffastmod'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d750b0c2f55dafe6a4b531cb322bf0b6af915b52
[INFO] checking facebookincubator/fastmod against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffacebookincubator%2Ffastmod" "/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/facebookincubator/fastmod on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/facebookincubator/fastmod
[INFO] finished tweaking git repo https://github.com/facebookincubator/fastmod
[INFO] tweaked toml for git repo https://github.com/facebookincubator/fastmod written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/facebookincubator/fastmod already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rprompt v1.0.5
[INFO] [stderr]   Downloaded grep-matcher v0.1.4
[INFO] [stderr]   Downloaded grep-searcher v0.1.7
[INFO] [stderr]   Downloaded arc-swap v0.4.5
[INFO] [stderr]   Downloaded signal-hook v0.1.13
[INFO] [stderr]   Downloaded crossterm v0.17.1
[INFO] [stderr]   Downloaded grep-cli v0.1.4
[INFO] [stderr]   Downloaded encoding_rs_io v0.1.7
[INFO] [stderr]   Downloaded diff v0.1.12
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded crossterm_winapi v0.6.1
[INFO] [stderr]   Downloaded grep-printer v0.1.4
[INFO] [stderr]   Downloaded grep-regex v0.1.7
[INFO] [stderr]   Downloaded grep v0.2.5
[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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0872678d5bc0b69f05e7427ee3c772df775901d0db1a2c984d5fd1bdef5a1cbb
[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" "0872678d5bc0b69f05e7427ee3c772df775901d0db1a2c984d5fd1bdef5a1cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0872678d5bc0b69f05e7427ee3c772df775901d0db1a2c984d5fd1bdef5a1cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0872678d5bc0b69f05e7427ee3c772df775901d0db1a2c984d5fd1bdef5a1cbb", kill_on_drop: false }`
[INFO] [stdout] 0872678d5bc0b69f05e7427ee3c772df775901d0db1a2c984d5fd1bdef5a1cbb
[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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a48939ff0571c9a64c2d832ccec67d3ba854165977ef1273b74116fba2b215bd
[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" "a48939ff0571c9a64c2d832ccec67d3ba854165977ef1273b74116fba2b215bd", 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]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking rprompt v1.0.5
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking encoding_rs v0.8.22
[INFO] [stderr]     Checking predicates v1.0.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.50
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking grep-matcher v0.1.4
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]     Checking crossterm v0.17.1
[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking grep-searcher v0.1.7
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking grep-regex v0.1.7
[INFO] [stderr]     Checking grep-cli v0.1.4
[INFO] [stderr]     Checking ignore v0.4.14
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking grep-printer v0.1.4
[INFO] [stderr]     Checking grep v0.2.5
[INFO] [stderr]     Checking fastmod v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.81s
[INFO] running `Command { std: "docker" "inspect" "a48939ff0571c9a64c2d832ccec67d3ba854165977ef1273b74116fba2b215bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a48939ff0571c9a64c2d832ccec67d3ba854165977ef1273b74116fba2b215bd", kill_on_drop: false }`
[INFO] [stdout] a48939ff0571c9a64c2d832ccec67d3ba854165977ef1273b74116fba2b215bd