[INFO] cloning repository https://github.com/iwanders/histogram_text_matcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iwanders/histogram_text_matcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiwanders%2Fhistogram_text_matcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiwanders%2Fhistogram_text_matcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02bb0452c1cf9e86f01d623731d95aae87690123
[INFO] building iwanders/histogram_text_matcher against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiwanders%2Fhistogram_text_matcher" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iwanders/histogram_text_matcher on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iwanders/histogram_text_matcher
[INFO] finished tweaking git repo https://github.com/iwanders/histogram_text_matcher
[INFO] tweaked toml for git repo https://github.com/iwanders/histogram_text_matcher written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/iwanders/histogram_text_matcher 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded imageproc v0.24.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 747bd347e4dc85c7fa3d4aca6d5d394e61fb8fca7c2e73811b41e753243662a8
[INFO] running `Command { std: "docker" "start" "-a" "747bd347e4dc85c7fa3d4aca6d5d394e61fb8fca7c2e73811b41e753243662a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "747bd347e4dc85c7fa3d4aca6d5d394e61fb8fca7c2e73811b41e753243662a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "747bd347e4dc85c7fa3d4aca6d5d394e61fb8fca7c2e73811b41e753243662a8", kill_on_drop: false }`
[INFO] [stdout] 747bd347e4dc85c7fa3d4aca6d5d394e61fb8fca7c2e73811b41e753243662a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bd97ff19a6217cf5830277f068c1969c6e5c9efa71ecd8ab4a24b22f5ccb2b5
[INFO] running `Command { std: "docker" "start" "-a" "8bd97ff19a6217cf5830277f068c1969c6e5c9efa71ecd8ab4a24b22f5ccb2b5", kill_on_drop: false }`
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[INFO] [stderr]    Compiling histogram_text_matcher v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 48.91s
[INFO] running `Command { std: "docker" "inspect" "8bd97ff19a6217cf5830277f068c1969c6e5c9efa71ecd8ab4a24b22f5ccb2b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bd97ff19a6217cf5830277f068c1969c6e5c9efa71ecd8ab4a24b22f5ccb2b5", kill_on_drop: false }`
[INFO] [stdout] 8bd97ff19a6217cf5830277f068c1969c6e5c9efa71ecd8ab4a24b22f5ccb2b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f12bf62f1782c4ca2268bb51e454e8923c9c16810b0335414e46f003e10ef4d
[INFO] running `Command { std: "docker" "start" "-a" "3f12bf62f1782c4ca2268bb51e454e8923c9c16810b0335414e46f003e10ef4d", kill_on_drop: false }`
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[INFO] [stderr]    Compiling histogram_text_matcher v0.0.0 (/opt/rustwide/workdir)
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[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 30.81s
[INFO] running `Command { std: "docker" "inspect" "3f12bf62f1782c4ca2268bb51e454e8923c9c16810b0335414e46f003e10ef4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f12bf62f1782c4ca2268bb51e454e8923c9c16810b0335414e46f003e10ef4d", kill_on_drop: false }`
[INFO] [stdout] 3f12bf62f1782c4ca2268bb51e454e8923c9c16810b0335414e46f003e10ef4d