[INFO] fetching crate prototty_common 0.25.0...
[INFO] checking prototty_common-0.25.0 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate prototty_common 0.25.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate prototty_common 0.25.0 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prototty_common 0.25.0
[INFO] finished tweaking crates.io crate prototty_common 0.25.0
[INFO] tweaked toml for crates.io crate prototty_common 0.25.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prototty_input v0.25.0
[INFO] [stderr]   Downloaded prototty_render v0.25.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a650987c09e8b94931e6898f7ea26aa11a9ed53428fc50986e43450d6988c1a5
[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" "a650987c09e8b94931e6898f7ea26aa11a9ed53428fc50986e43450d6988c1a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a650987c09e8b94931e6898f7ea26aa11a9ed53428fc50986e43450d6988c1a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a650987c09e8b94931e6898f7ea26aa11a9ed53428fc50986e43450d6988c1a5", kill_on_drop: false }`
[INFO] [stdout] a650987c09e8b94931e6898f7ea26aa11a9ed53428fc50986e43450d6988c1a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 1fa993afd50ba697b9da6c71bb6c197ecc4b32d069b52e9c9c26dbcb21ff96f4
[INFO] running `Command { std: "docker" "start" "-a" "1fa993afd50ba697b9da6c71bb6c197ecc4b32d069b52e9c9c26dbcb21ff96f4", kill_on_drop: false }`
[INFO] [stderr]     Checking rgb24 v0.1.5
[INFO] [stderr]     Checking prototty_input v0.25.0
[INFO] [stderr]     Checking prototty_render v0.25.0
[INFO] [stderr]     Checking prototty_common v0.25.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `num_lines`
[INFO] [stdout]  --> src/pager.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     num_lines: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_lines`
[INFO] [stdout]  --> src/pager.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     num_lines: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "1fa993afd50ba697b9da6c71bb6c197ecc4b32d069b52e9c9c26dbcb21ff96f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fa993afd50ba697b9da6c71bb6c197ecc4b32d069b52e9c9c26dbcb21ff96f4", kill_on_drop: false }`
[INFO] [stdout] 1fa993afd50ba697b9da6c71bb6c197ecc4b32d069b52e9c9c26dbcb21ff96f4