[INFO] cloning repository https://github.com/heavypackets/rust-iterator-emoji
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/heavypackets/rust-iterator-emoji" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheavypackets%2Frust-iterator-emoji", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheavypackets%2Frust-iterator-emoji'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1616bec1b7b143eb70a4a48f614c45f4b5480213
[INFO] testing heavypackets/rust-iterator-emoji against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheavypackets%2Frust-iterator-emoji" "/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/heavypackets/rust-iterator-emoji on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/heavypackets/rust-iterator-emoji
[INFO] finished tweaking git repo https://github.com/heavypackets/rust-iterator-emoji
[INFO] tweaked toml for git repo https://github.com/heavypackets/rust-iterator-emoji written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/heavypackets/rust-iterator-emoji already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08e6413bd65fd9da3ae7e3b8869c430ec8d98bb5d68f44d9ded2db46ca3e9e11
[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" "08e6413bd65fd9da3ae7e3b8869c430ec8d98bb5d68f44d9ded2db46ca3e9e11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08e6413bd65fd9da3ae7e3b8869c430ec8d98bb5d68f44d9ded2db46ca3e9e11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08e6413bd65fd9da3ae7e3b8869c430ec8d98bb5d68f44d9ded2db46ca3e9e11", kill_on_drop: false }`
[INFO] [stdout] 08e6413bd65fd9da3ae7e3b8869c430ec8d98bb5d68f44d9ded2db46ca3e9e11
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ebf3c87494f0707f2f7223a6ab26393aacd427d7f7f377659c711be856f4e33
[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" "8ebf3c87494f0707f2f7223a6ab26393aacd427d7f7f377659c711be856f4e33", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-iterators-as-emojis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "8ebf3c87494f0707f2f7223a6ab26393aacd427d7f7f377659c711be856f4e33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ebf3c87494f0707f2f7223a6ab26393aacd427d7f7f377659c711be856f4e33", kill_on_drop: false }`
[INFO] [stdout] 8ebf3c87494f0707f2f7223a6ab26393aacd427d7f7f377659c711be856f4e33
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b069c7d0787e0caa3e584c9d40c067ab81ff619e66765862b2c4e0290abb9154
[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" "b069c7d0787e0caa3e584c9d40c067ab81ff619e66765862b2c4e0290abb9154", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-iterators-as-emojis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "b069c7d0787e0caa3e584c9d40c067ab81ff619e66765862b2c4e0290abb9154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b069c7d0787e0caa3e584c9d40c067ab81ff619e66765862b2c4e0290abb9154", kill_on_drop: false }`
[INFO] [stdout] b069c7d0787e0caa3e584c9d40c067ab81ff619e66765862b2c4e0290abb9154
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] b6e13ff01d51c00c2e516db2bd0bd51cfb59bdd25b9d9684fceb3d024ffcccee
[INFO] running `Command { std: "docker" "start" "-a" "b6e13ff01d51c00c2e516db2bd0bd51cfb59bdd25b9d9684fceb3d024ffcccee", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_iterators_as_emojis-343bc9d66f54c652
[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" "b6e13ff01d51c00c2e516db2bd0bd51cfb59bdd25b9d9684fceb3d024ffcccee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6e13ff01d51c00c2e516db2bd0bd51cfb59bdd25b9d9684fceb3d024ffcccee", kill_on_drop: false }`
[INFO] [stdout] b6e13ff01d51c00c2e516db2bd0bd51cfb59bdd25b9d9684fceb3d024ffcccee