[INFO] cloning repository https://github.com/cg505/gethostkeys
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cg505/gethostkeys" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcg505%2Fgethostkeys", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcg505%2Fgethostkeys'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b76c2d8a0be0ad5dc5df730e0f177075c4b2816
[INFO] checking cg505/gethostkeys against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcg505%2Fgethostkeys" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cg505/gethostkeys on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cg505/gethostkeys
[INFO] finished tweaking git repo https://github.com/cg505/gethostkeys
[INFO] tweaked toml for git repo https://github.com/cg505/gethostkeys written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/cg505/gethostkeys already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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 autocfg v0.1.1
[INFO] [stderr]   Downloaded cc v1.0.28
[INFO] [stderr]   Downloaded openssl-sys v0.9.40
[INFO] [stderr]   Downloaded syn v0.15.24
[INFO] [stderr]   Downloaded libc v0.2.45
[INFO] [stderr]   Downloaded backtrace v0.3.13
[INFO] [stderr]   Downloaded rand v0.4.5
[INFO] [stderr]   Downloaded curl v0.4.19
[INFO] [stderr]   Downloaded curl-sys v0.4.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8193c5dc0d66d7f3360b5cb0f63c9bbe22b5a7d3a88003cd00060a85c237e12
[INFO] running `Command { std: "docker" "start" "-a" "c8193c5dc0d66d7f3360b5cb0f63c9bbe22b5a7d3a88003cd00060a85c237e12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8193c5dc0d66d7f3360b5cb0f63c9bbe22b5a7d3a88003cd00060a85c237e12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8193c5dc0d66d7f3360b5cb0f63c9bbe22b5a7d3a88003cd00060a85c237e12", kill_on_drop: false }`
[INFO] [stdout] c8193c5dc0d66d7f3360b5cb0f63c9bbe22b5a7d3a88003cd00060a85c237e12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b04be8f5c1e3cca07c861f6861a30b867815d2a2a91828fa9d7ed3d69886612
[INFO] running `Command { std: "docker" "start" "-a" "0b04be8f5c1e3cca07c861f6861a30b867815d2a2a91828fa9d7ed3d69886612", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking dirs v1.0.4
[INFO] [stderr]    Compiling openssl-sys v0.9.40
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.15
[INFO] [stderr]     Checking curl v0.4.19
[INFO] [stderr]     Checking gethostkeys v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/main.rs (3 fixes)
[INFO] [stdout] warning: value assigned to `dest` is never read
[INFO] [stdout]   --> src/main.rs:93:11
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut dest = String::new();
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dest` is never read
[INFO] [stdout]   --> src/main.rs:93:11
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut dest = String::new();
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.91s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking gethostkeys v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: value assigned to `dest` is never read
[INFO] [stdout]   --> src/main.rs:93:11
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut dest = String::new();
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dest` is never read
[INFO] [stdout]   --> src/main.rs:93:11
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut dest = String::new();
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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 0.16s
[INFO] running `Command { std: "docker" "inspect" "0b04be8f5c1e3cca07c861f6861a30b867815d2a2a91828fa9d7ed3d69886612", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b04be8f5c1e3cca07c861f6861a30b867815d2a2a91828fa9d7ed3d69886612", kill_on_drop: false }`
[INFO] [stdout] 0b04be8f5c1e3cca07c861f6861a30b867815d2a2a91828fa9d7ed3d69886612