[INFO] fetching crate rustman 0.4.2...
[INFO] checking rustman-0.4.2 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate rustman 0.4.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rustman 0.4.2 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustman 0.4.2
[INFO] finished tweaking crates.io crate rustman 0.4.2
[INFO] tweaked toml for crates.io crate rustman 0.4.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate rustman 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded autocfg v0.1.4
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded rustc-demangle v0.1.15
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded syn v0.15.36
[INFO] [stderr]   Downloaded serde v1.0.97
[INFO] [stderr]   Downloaded http_req v0.6.1
[INFO] [stderr]   Downloaded cc v1.0.37
[INFO] [stderr]   Downloaded log v0.4.6
[INFO] [stderr]   Downloaded getrandom v0.1.6
[INFO] [stderr]   Downloaded redox_users v0.3.0
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded backtrace v0.3.30
[INFO] [stderr]   Downloaded spin v0.5.1
[INFO] [stderr]   Downloaded unchained v0.1.3
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff1c3b1499c1b6df44f07992c5fd4659eb53b2722aa6bfa91d4674d605bcdb29
[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" "ff1c3b1499c1b6df44f07992c5fd4659eb53b2722aa6bfa91d4674d605bcdb29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff1c3b1499c1b6df44f07992c5fd4659eb53b2722aa6bfa91d4674d605bcdb29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff1c3b1499c1b6df44f07992c5fd4659eb53b2722aa6bfa91d4674d605bcdb29", kill_on_drop: false }`
[INFO] [stdout] ff1c3b1499c1b6df44f07992c5fd4659eb53b2722aa6bfa91d4674d605bcdb29
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] bf444fb7dcee2a78d3b061377194cf7179b2d3223cd5f9d254587232508a8fe3
[INFO] running `Command { std: "docker" "start" "-a" "bf444fb7dcee2a78d3b061377194cf7179b2d3223cd5f9d254587232508a8fe3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking spin v0.5.1
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking unchained v0.1.3
[INFO] [stderr]     Checking bitflags v1.1.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking http_req v0.6.1
[INFO] [stderr]     Checking rustman v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `parse_version_desc`
[INFO] [stdout]    --> src/main.rs:496:4
[INFO] [stdout]     |
[INFO] [stdout] 496 | fn parse_version_desc(s: &str) -> (Name, Version) {
[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 20.35s
[INFO] running `Command { std: "docker" "inspect" "bf444fb7dcee2a78d3b061377194cf7179b2d3223cd5f9d254587232508a8fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf444fb7dcee2a78d3b061377194cf7179b2d3223cd5f9d254587232508a8fe3", kill_on_drop: false }`
[INFO] [stdout] bf444fb7dcee2a78d3b061377194cf7179b2d3223cd5f9d254587232508a8fe3