[INFO] cloning repository https://github.com/nkmazur/cert_machine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nkmazur/cert_machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkmazur%2Fcert_machine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkmazur%2Fcert_machine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f16cf4ed28eaff2fe5a7bb9b9212d56e33f69fc6
[INFO] checking nkmazur/cert_machine against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkmazur%2Fcert_machine" "/workspace/builds/worker-83/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-83/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nkmazur/cert_machine on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nkmazur/cert_machine
[INFO] finished tweaking git repo https://github.com/nkmazur/cert_machine
[INFO] tweaked toml for git repo https://github.com/nkmazur/cert_machine written to /workspace/builds/worker-83/source/Cargo.toml
[INFO] crate git repo https://github.com/nkmazur/cert_machine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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 serde_yaml v0.8.8
[INFO] [stderr]   Downloaded openssl v0.10.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b51997564a41c17a2912550a574a3dca7321b7e3868defca4986f063c299b166
[INFO] running `Command { std: "docker" "start" "-a" "b51997564a41c17a2912550a574a3dca7321b7e3868defca4986f063c299b166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b51997564a41c17a2912550a574a3dca7321b7e3868defca4986f063c299b166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b51997564a41c17a2912550a574a3dca7321b7e3868defca4986f063c299b166", kill_on_drop: false }`
[INFO] [stdout] b51997564a41c17a2912550a574a3dca7321b7e3868defca4986f063c299b166
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1030e5227e1c806c6b1941e7dccc334c4dd5da330344f4cf2ef750a7eac47a88
[INFO] running `Command { std: "docker" "start" "-a" "1030e5227e1c806c6b1941e7dccc334c4dd5da330344f4cf2ef750a7eac47a88", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling cc v1.0.35
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]    Compiling openssl v0.10.20
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]    Compiling openssl-sys v0.9.43
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking cert_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:245:21
[INFO] [stdout]     |
[INFO] [stdout] 245 |                 let mut cert_filename = match instance.filename {
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:256:21
[INFO] [stdout]     |
[INFO] [stdout] 256 |                 let mut cert_filename = match instance.filename {
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:328:25
[INFO] [stdout]     |
[INFO] [stdout] 328 |                     let mut cert_filename = match instance.filename {
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:245:21
[INFO] [stdout]     |
[INFO] [stdout] 245 |                 let mut cert_filename = match instance.filename {
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:256:21
[INFO] [stdout]     |
[INFO] [stdout] 256 |                 let mut cert_filename = match instance.filename {
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:328:25
[INFO] [stdout]     |
[INFO] [stdout] 328 |                     let mut cert_filename = match instance.filename {
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.58s
[INFO] running `Command { std: "docker" "inspect" "1030e5227e1c806c6b1941e7dccc334c4dd5da330344f4cf2ef750a7eac47a88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1030e5227e1c806c6b1941e7dccc334c4dd5da330344f4cf2ef750a7eac47a88", kill_on_drop: false }`
[INFO] [stdout] 1030e5227e1c806c6b1941e7dccc334c4dd5da330344f4cf2ef750a7eac47a88