[INFO] cloning repository https://github.com/traxys/lang_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/traxys/lang_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftraxys%2Flang_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftraxys%2Flang_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d44e38ebab2fac1b98cbd974c97b8b2a117c9b8c
[INFO] checking traxys/lang_test against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftraxys%2Flang_test" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/traxys/lang_test on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/traxys/lang_test
[INFO] finished tweaking git repo https://github.com/traxys/lang_test
[INFO] tweaked toml for git repo https://github.com/traxys/lang_test written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/traxys/lang_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_meta v2.1.1
[INFO] [stderr]   Downloaded block-padding v0.1.4
[INFO] [stderr]   Downloaded pest v2.1.1
[INFO] [stderr]   Downloaded backtrace v0.3.34
[INFO] [stderr]   Downloaded ucd-trie v0.1.2
[INFO] [stderr]   Downloaded sha-1 v0.8.1
[INFO] [stderr]   Downloaded crossbeam-channel v0.3.9
[INFO] [stderr]   Downloaded rustyline v5.0.1
[INFO] [stderr]   Downloaded rust-argon2 v0.5.0
[INFO] [stderr]   Downloaded cc v1.0.39
[INFO] [stderr]   Downloaded crossbeam v0.5.0
[INFO] [stderr]   Downloaded blake2b_simd v0.5.6
[INFO] [stderr]   Downloaded libc v0.2.61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "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] a708348536256d257e17a43a3d29ab4c4c0b422397c4409447ce7e1cfd7b9387
[INFO] running `Command { std: "docker" "start" "-a" "a708348536256d257e17a43a3d29ab4c4c0b422397c4409447ce7e1cfd7b9387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a708348536256d257e17a43a3d29ab4c4c0b422397c4409447ce7e1cfd7b9387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a708348536256d257e17a43a3d29ab4c4c0b422397c4409447ce7e1cfd7b9387", kill_on_drop: false }`
[INFO] [stdout] a708348536256d257e17a43a3d29ab4c4c0b422397c4409447ce7e1cfd7b9387
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 112af419b290c2e6aa337e9342ca5bbca865d8b71bb90a13f5d387f180811bf0
[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" "112af419b290c2e6aa337e9342ca5bbca865d8b71bb90a13f5d387f180811bf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.61
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling pest v2.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking rustyline v5.0.1
[INFO] [stderr]     Checking lang_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.69s
[INFO] running `Command { std: "docker" "inspect" "112af419b290c2e6aa337e9342ca5bbca865d8b71bb90a13f5d387f180811bf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "112af419b290c2e6aa337e9342ca5bbca865d8b71bb90a13f5d387f180811bf0", kill_on_drop: false }`
[INFO] [stdout] 112af419b290c2e6aa337e9342ca5bbca865d8b71bb90a13f5d387f180811bf0