[INFO] cloning repository https://github.com/com4/wd-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/com4/wd-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcom4%2Fwd-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcom4%2Fwd-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 441552e3edb3faac62158b6ea482d501f1cf9e58
[INFO] checking com4/wd-rs against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcom4%2Fwd-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/com4/wd-rs on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] started tweaking git repo https://github.com/com4/wd-rs
[INFO] finished tweaking git repo https://github.com/com4/wd-rs
[INFO] tweaked toml for git repo https://github.com/com4/wd-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/com4/wd-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c00cdb86c671d447fb1a1e8ba7c70906ac0b9b313c357e24f5b3c9f4976b5abf
[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" "c00cdb86c671d447fb1a1e8ba7c70906ac0b9b313c357e24f5b3c9f4976b5abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c00cdb86c671d447fb1a1e8ba7c70906ac0b9b313c357e24f5b3c9f4976b5abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c00cdb86c671d447fb1a1e8ba7c70906ac0b9b313c357e24f5b3c9f4976b5abf", kill_on_drop: false }`
[INFO] [stdout] c00cdb86c671d447fb1a1e8ba7c70906ac0b9b313c357e24f5b3c9f4976b5abf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16638c01821f0b53edb3d05480e16ed7b5ec3e23539561b9bb2f282d9ca7b847
[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" "16638c01821f0b53edb3d05480e16ed7b5ec3e23539561b9bb2f282d9ca7b847", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking stderrlog v0.4.3
[INFO] [stderr]    Compiling warpdir v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `stderr`
[INFO] [stdout]   --> src/main.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{self, stderr, BufReader, BufWriter, Write};
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stderr`
[INFO] [stdout]   --> src/main.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{self, stderr, BufReader, BufWriter, Write};
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.91s
[INFO] running `Command { std: "docker" "inspect" "16638c01821f0b53edb3d05480e16ed7b5ec3e23539561b9bb2f282d9ca7b847", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16638c01821f0b53edb3d05480e16ed7b5ec3e23539561b9bb2f282d9ca7b847", kill_on_drop: false }`
[INFO] [stdout] 16638c01821f0b53edb3d05480e16ed7b5ec3e23539561b9bb2f282d9ca7b847