[INFO] cloning repository https://github.com/droundy/rust-student-pairs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/droundy/rust-student-pairs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdroundy%2Frust-student-pairs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdroundy%2Frust-student-pairs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3cf2d96100bdbf38828afd59dba38df1897dcc00
[INFO] checking droundy/rust-student-pairs against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdroundy%2Frust-student-pairs" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/droundy/rust-student-pairs on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/droundy/rust-student-pairs
[INFO] finished tweaking git repo https://github.com/droundy/rust-student-pairs
[INFO] tweaked toml for git repo https://github.com/droundy/rust-student-pairs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/droundy/rust-student-pairs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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 tinyset v0.4.4
[INFO] [stderr]   Downloaded internment v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f0bbc609cae25fa2a0d11adbc265bb19226a34ede1f5a5f1fa64c1aa99e923d
[INFO] running `Command { std: "docker" "start" "-a" "6f0bbc609cae25fa2a0d11adbc265bb19226a34ede1f5a5f1fa64c1aa99e923d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f0bbc609cae25fa2a0d11adbc265bb19226a34ede1f5a5f1fa64c1aa99e923d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f0bbc609cae25fa2a0d11adbc265bb19226a34ede1f5a5f1fa64c1aa99e923d", kill_on_drop: false }`
[INFO] [stdout] 6f0bbc609cae25fa2a0d11adbc265bb19226a34ede1f5a5f1fa64c1aa99e923d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a3c852a787f482a1a6244ef26ab8934fc9d1c9aae25276ae2e9777f1a68006a
[INFO] running `Command { std: "docker" "start" "-a" "6a3c852a787f482a1a6244ef26ab8934fc9d1c9aae25276ae2e9777f1a68006a", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] no edition found in manifest, probably 2015, skipping
[INFO] running `Command { std: "docker" "inspect" "6a3c852a787f482a1a6244ef26ab8934fc9d1c9aae25276ae2e9777f1a68006a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a3c852a787f482a1a6244ef26ab8934fc9d1c9aae25276ae2e9777f1a68006a", kill_on_drop: false }`
[INFO] [stdout] 6a3c852a787f482a1a6244ef26ab8934fc9d1c9aae25276ae2e9777f1a68006a