[INFO] cloning repository https://github.com/mark-i-m/membuffer-extract
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mark-i-m/membuffer-extract" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-i-m%2Fmembuffer-extract", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-i-m%2Fmembuffer-extract'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 63da748ab1a38a00929b5e57fe52521ac0b5cc63
[INFO] checking mark-i-m/membuffer-extract against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark-i-m%2Fmembuffer-extract" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mark-i-m/membuffer-extract on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mark-i-m/membuffer-extract
[INFO] finished tweaking git repo https://github.com/mark-i-m/membuffer-extract
[INFO] tweaked toml for git repo https://github.com/mark-i-m/membuffer-extract written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mark-i-m/membuffer-extract already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] 6133e695b92407c7ffb509b46e31f2324b677b933615620091f70ed54cabb282
[INFO] running `Command { std: "docker" "start" "-a" "6133e695b92407c7ffb509b46e31f2324b677b933615620091f70ed54cabb282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6133e695b92407c7ffb509b46e31f2324b677b933615620091f70ed54cabb282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6133e695b92407c7ffb509b46e31f2324b677b933615620091f70ed54cabb282", kill_on_drop: false }`
[INFO] [stdout] 6133e695b92407c7ffb509b46e31f2324b677b933615620091f70ed54cabb282
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f81ad956de5b71ffb00a7f0fd06f84d4061ec072d326823c164bfbfb83c223b
[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" "2f81ad956de5b71ffb00a7f0fd06f84d4061ec072d326823c164bfbfb83c223b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking regex-syntax v0.6.16
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.11
[INFO] [stderr]    Compiling proc-macro-error v0.4.11
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking console v0.9.2
[INFO] [stderr]     Checking indicatif v0.14.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling structopt-derive v0.4.4
[INFO] [stderr]     Checking structopt v0.3.11
[INFO] [stderr]     Checking membuffer-extract v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]   --> src/trace.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     i: 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: `i`
[INFO] [stdout]   --> src/trace.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     i: 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 23.76s
[INFO] running `Command { std: "docker" "inspect" "2f81ad956de5b71ffb00a7f0fd06f84d4061ec072d326823c164bfbfb83c223b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f81ad956de5b71ffb00a7f0fd06f84d4061ec072d326823c164bfbfb83c223b", kill_on_drop: false }`
[INFO] [stdout] 2f81ad956de5b71ffb00a7f0fd06f84d4061ec072d326823c164bfbfb83c223b