[INFO] cloning repository https://github.com/felipesere/fern
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/felipesere/fern" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelipesere%2Ffern", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelipesere%2Ffern'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 69d8ddd44f17e28e102e9f2562d7c6b0623cea05
[INFO] checking felipesere/fern against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffelipesere%2Ffern" "/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/felipesere/fern 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/felipesere/fern
[INFO] finished tweaking git repo https://github.com/felipesere/fern
[INFO] tweaked toml for git repo https://github.com/felipesere/fern written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/felipesere/fern 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 yaml-rust v0.4.3
[INFO] [stderr]   Downloaded arrayref v0.3.6
[INFO] [stderr]   Downloaded linked-hash-map v0.5.3
[INFO] [stderr]   Downloaded serde_yaml v0.8.12
[INFO] [stderr]   Downloaded base64 v0.11.0
[INFO] [stderr]   Downloaded wait-timeout v0.2.0
[INFO] [stderr]   Downloaded regex v1.3.7
[INFO] [stderr]   Downloaded blake2b_simd v0.5.10
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.8
[INFO] [stderr]   Downloaded assert_cmd v1.0.1
[INFO] [stderr]   Downloaded globwalk v0.7.3
[INFO] [stderr]   Downloaded redox_users v0.3.4
[INFO] [stderr]   Downloaded serde v1.0.110
[INFO] [stderr]   Downloaded assert_fs v1.0.0
[INFO] [stderr]   Downloaded bstr v0.2.13
[INFO] [stderr]   Downloaded proc-macro2 v1.0.13
[INFO] [stderr]   Downloaded arrayvec v0.5.1
[INFO] [stderr]   Downloaded dirs v2.0.2
[INFO] [stderr]   Downloaded ignore v0.4.15
[INFO] [stderr]   Downloaded constant_time_eq v0.1.5
[INFO] [stderr]   Downloaded rust-argon2 v0.7.0
[INFO] [stderr]   Downloaded dirs-sys v0.3.4
[INFO] [stderr]   Downloaded syn v1.0.22
[INFO] [stderr]   Downloaded aho-corasick v0.7.10
[INFO] [stderr]   Downloaded regex-syntax v0.6.17
[INFO] [stderr]   Downloaded predicates v1.0.4
[INFO] [stderr]   Downloaded doc-comment v0.3.3
[INFO] [stderr]   Downloaded globset v0.4.5
[INFO] [stderr]   Downloaded serde_derive v1.0.110
[INFO] [stderr]   Downloaded anyhow v1.0.31
[INFO] [stderr]   Downloaded quote v1.0.5
[INFO] [stderr]   Downloaded normalize-line-endings v0.3.0
[INFO] [stderr]   Downloaded pico-args v0.3.1
[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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1ed093786cd8b999550533004e2626c398f08be346a7cb6000d486e621d3129
[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" "c1ed093786cd8b999550533004e2626c398f08be346a7cb6000d486e621d3129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1ed093786cd8b999550533004e2626c398f08be346a7cb6000d486e621d3129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1ed093786cd8b999550533004e2626c398f08be346a7cb6000d486e621d3129", kill_on_drop: false }`
[INFO] [stdout] c1ed093786cd8b999550533004e2626c398f08be346a7cb6000d486e621d3129
[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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75635b99aa2b63ad7daaa8d6aefe26bdd27fb097e0f5ae6395bae9469247625c
[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" "75635b99aa2b63ad7daaa8d6aefe26bdd27fb097e0f5ae6395bae9469247625c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking dtoa v0.4.5
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking pico-args v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]     Checking float-cmp v0.6.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking predicates v1.0.4
[INFO] [stderr]     Checking ignore v0.4.15
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]     Checking globwalk v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking assert_fs v1.0.0
[INFO] [stderr]     Checking serde v1.0.110
[INFO] [stderr]     Checking serde_yaml v0.8.12
[INFO] [stderr]     Checking fern-run v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.33s
[INFO] running `Command { std: "docker" "inspect" "75635b99aa2b63ad7daaa8d6aefe26bdd27fb097e0f5ae6395bae9469247625c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75635b99aa2b63ad7daaa8d6aefe26bdd27fb097e0f5ae6395bae9469247625c", kill_on_drop: false }`
[INFO] [stdout] 75635b99aa2b63ad7daaa8d6aefe26bdd27fb097e0f5ae6395bae9469247625c