[INFO] cloning repository https://github.com/raffber/merge_tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raffber/merge_tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraffber%2Fmerge_tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraffber%2Fmerge_tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2ba52e6eedffbe7cc13a6bdc89877d05b574f15
[INFO] checking raffber/merge_tool against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraffber%2Fmerge_tool" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/raffber/merge_tool on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/raffber/merge_tool
[INFO] finished tweaking git repo https://github.com/raffber/merge_tool
[INFO] tweaked toml for git repo https://github.com/raffber/merge_tool written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/raffber/merge_tool already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_matches v1.3.0
[INFO] [stderr]   Downloaded pathdiff v0.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.110
[INFO] [stderr]   Downloaded git2 v0.13.6
[INFO] [stderr]   Downloaded jobserver v0.1.21
[INFO] [stderr]   Downloaded cc v1.0.54
[INFO] [stderr]   Downloaded syn v1.0.27
[INFO] [stderr]   Downloaded libgit2-sys v0.12.6+1.0.0
[INFO] [stderr]   Downloaded libssh2-sys v0.2.17
[INFO] [stderr]   Downloaded serde_json v1.0.53
[INFO] [stderr]   Downloaded libz-sys v1.0.25
[INFO] [stderr]   Downloaded openssl-sys v0.9.57
[INFO] [stderr]   Downloaded proc-macro2 v1.0.17
[INFO] [stderr]   Downloaded quote v1.0.6
[INFO] [stderr]   Downloaded serde v1.0.110
[INFO] [stderr]   Downloaded sha2 v0.8.2
[INFO] [stderr]   Downloaded itertools v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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] 578a8063fe56ef4875c41b7f31c7348d7f539457da5c6e10877bbcd36c2d4276
[INFO] running `Command { std: "docker" "start" "-a" "578a8063fe56ef4875c41b7f31c7348d7f539457da5c6e10877bbcd36c2d4276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "578a8063fe56ef4875c41b7f31c7348d7f539457da5c6e10877bbcd36c2d4276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "578a8063fe56ef4875c41b7f31c7348d7f539457da5c6e10877bbcd36c2d4276", kill_on_drop: false }`
[INFO] [stdout] 578a8063fe56ef4875c41b7f31c7348d7f539457da5c6e10877bbcd36c2d4276
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50b3e90f78fe6c36d3ac9c88a9071725d20c15d6e183e2da17f11753fdd915eb
[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" "50b3e90f78fe6c36d3ac9c88a9071725d20c15d6e183e2da17f11753fdd915eb", kill_on_drop: false }`
[INFO] [stderr]     Checking pathdiff v0.2.0
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking serde v1.0.110
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling openssl-sys v0.9.57
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libssh2-sys v0.2.17
[INFO] [stderr]    Compiling libgit2-sys v0.12.6+1.0.0
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking git2 v0.13.6
[INFO] [stderr]     Checking merge_tool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.34s
[INFO] running `Command { std: "docker" "inspect" "50b3e90f78fe6c36d3ac9c88a9071725d20c15d6e183e2da17f11753fdd915eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50b3e90f78fe6c36d3ac9c88a9071725d20c15d6e183e2da17f11753fdd915eb", kill_on_drop: false }`
[INFO] [stdout] 50b3e90f78fe6c36d3ac9c88a9071725d20c15d6e183e2da17f11753fdd915eb