[INFO] cloning repository https://github.com/c-git/hackerrank
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/c-git/hackerrank" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-git%2Fhackerrank", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-git%2Fhackerrank'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49d34d1a9e910ebb729cf1a84dcc2ea0da2df6d8
[INFO] building c-git/hackerrank against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc-git%2Fhackerrank" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/c-git/hackerrank on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/c-git/hackerrank
[INFO] finished tweaking git repo https://github.com/c-git/hackerrank
[INFO] tweaked toml for git repo https://github.com/c-git/hackerrank written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/c-git/hackerrank already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--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 assert_cmd v2.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c32e41c3760b88a2e6fea5872b63997844281fcb4ee3c86ffc578b3249b8107
[INFO] running `Command { std: "docker" "start" "-a" "7c32e41c3760b88a2e6fea5872b63997844281fcb4ee3c86ffc578b3249b8107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c32e41c3760b88a2e6fea5872b63997844281fcb4ee3c86ffc578b3249b8107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c32e41c3760b88a2e6fea5872b63997844281fcb4ee3c86ffc578b3249b8107", kill_on_drop: false }`
[INFO] [stdout] 7c32e41c3760b88a2e6fea5872b63997844281fcb4ee3c86ffc578b3249b8107
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2293a029b96c81517daf502b95b3f2c2967ffcfdf60ecc9e792ec2a6b17adf1b
[INFO] running `Command { std: "docker" "start" "-a" "2293a029b96c81517daf502b95b3f2c2967ffcfdf60ecc9e792ec2a6b17adf1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling hackerrank v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.45s
[INFO] running `Command { std: "docker" "inspect" "2293a029b96c81517daf502b95b3f2c2967ffcfdf60ecc9e792ec2a6b17adf1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2293a029b96c81517daf502b95b3f2c2967ffcfdf60ecc9e792ec2a6b17adf1b", kill_on_drop: false }`
[INFO] [stdout] 2293a029b96c81517daf502b95b3f2c2967ffcfdf60ecc9e792ec2a6b17adf1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9753113d7a5f1e365733ffa3ed9354ca1a86460ed639b0b8c11945b6f39480e9
[INFO] running `Command { std: "docker" "start" "-a" "9753113d7a5f1e365733ffa3ed9354ca1a86460ed639b0b8c11945b6f39480e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling predicates-core v1.0.5
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling termtree v0.4.0
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling predicates-tree v1.0.7
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling pretty_assertions v1.3.0
[INFO] [stderr]    Compiling bstr v1.3.0
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling regex v1.7.1
[INFO] [stderr]    Compiling predicates v2.1.5
[INFO] [stderr]    Compiling assert_cmd v2.0.8
[INFO] [stderr]    Compiling hackerrank v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `Command { std: "docker" "inspect" "9753113d7a5f1e365733ffa3ed9354ca1a86460ed639b0b8c11945b6f39480e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9753113d7a5f1e365733ffa3ed9354ca1a86460ed639b0b8c11945b6f39480e9", kill_on_drop: false }`
[INFO] [stdout] 9753113d7a5f1e365733ffa3ed9354ca1a86460ed639b0b8c11945b6f39480e9