[INFO] cloning repository https://github.com/glugg23/huffman_coding
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/glugg23/huffman_coding" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglugg23%2Fhuffman_coding", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglugg23%2Fhuffman_coding'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 180497c9b7f11292fe6688bd3cef40d24ace30c9
[INFO] testing glugg23/huffman_coding against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglugg23%2Fhuffman_coding" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/glugg23/huffman_coding on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/glugg23/huffman_coding
[INFO] finished tweaking git repo https://github.com/glugg23/huffman_coding
[INFO] tweaked toml for git repo https://github.com/glugg23/huffman_coding written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/glugg23/huffman_coding already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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 strsim v0.8.0
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded atty v0.2.11
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded numtoa v0.1.0
[INFO] [stderr]   Downloaded unicode-xid v0.1.0
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded byteorder v1.3.1
[INFO] [stderr]   Downloaded proc-macro2 v0.4.30
[INFO] [stderr]   Downloaded serde_derive v1.0.92
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded termion v1.5.2
[INFO] [stderr]   Downloaded bitvec v0.13.0
[INFO] [stderr]   Downloaded syn v0.15.34
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded autocfg v0.1.4
[INFO] [stderr]   Downloaded bincode v1.1.4
[INFO] [stderr]   Downloaded textwrap v0.11.0
[INFO] [stderr]   Downloaded serde v1.0.92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d82695b51d452901a3076b32afd119ff229d9243121d9673fbac31fa601dc97f
[INFO] running `Command { std: "docker" "start" "-a" "d82695b51d452901a3076b32afd119ff229d9243121d9673fbac31fa601dc97f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d82695b51d452901a3076b32afd119ff229d9243121d9673fbac31fa601dc97f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d82695b51d452901a3076b32afd119ff229d9243121d9673fbac31fa601dc97f", kill_on_drop: false }`
[INFO] [stdout] d82695b51d452901a3076b32afd119ff229d9243121d9673fbac31fa601dc97f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a84e41cd26f6ac72fdf83d0ef5fcc633622d0ae449f8a9260a42f3514ec5fec0
[INFO] running `Command { std: "docker" "start" "-a" "a84e41cd26f6ac72fdf83d0ef5fcc633622d0ae449f8a9260a42f3514ec5fec0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bitvec v0.13.0
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling huffman_coding v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.59s
[INFO] running `Command { std: "docker" "inspect" "a84e41cd26f6ac72fdf83d0ef5fcc633622d0ae449f8a9260a42f3514ec5fec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a84e41cd26f6ac72fdf83d0ef5fcc633622d0ae449f8a9260a42f3514ec5fec0", kill_on_drop: false }`
[INFO] [stdout] a84e41cd26f6ac72fdf83d0ef5fcc633622d0ae449f8a9260a42f3514ec5fec0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d4b9075d0ca16d172420b1fd9b4ba9c059949dc6d1dbbb04f1b9de44a55f071
[INFO] running `Command { std: "docker" "start" "-a" "4d4b9075d0ca16d172420b1fd9b4ba9c059949dc6d1dbbb04f1b9de44a55f071", kill_on_drop: false }`
[INFO] [stderr]    Compiling huffman_coding v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "4d4b9075d0ca16d172420b1fd9b4ba9c059949dc6d1dbbb04f1b9de44a55f071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d4b9075d0ca16d172420b1fd9b4ba9c059949dc6d1dbbb04f1b9de44a55f071", kill_on_drop: false }`
[INFO] [stdout] 4d4b9075d0ca16d172420b1fd9b4ba9c059949dc6d1dbbb04f1b9de44a55f071
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a15906220118df700b029ce187c2a906e6f9ba3b94f86e935bb71770480d03a7
[INFO] running `Command { std: "docker" "start" "-a" "a15906220118df700b029ce187c2a906e6f9ba3b94f86e935bb71770480d03a7", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/huffman_coding-680d62bc13dcebef)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/huffman_coding-01cde073ec7cb136)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests huffman_coding
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a15906220118df700b029ce187c2a906e6f9ba3b94f86e935bb71770480d03a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a15906220118df700b029ce187c2a906e6f9ba3b94f86e935bb71770480d03a7", kill_on_drop: false }`
[INFO] [stdout] a15906220118df700b029ce187c2a906e6f9ba3b94f86e935bb71770480d03a7