[INFO] fetching crate racker-common 0.1.0...
[INFO] testing racker-common-0.1.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate racker-common 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate racker-common 0.1.0
[INFO] finished tweaking crates.io crate racker-common 0.1.0
[INFO] tweaked toml for crates.io crate racker-common 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate racker-common 0.1.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee39f3ddc3c1eaf68a6251f5d3026b62339b01826921f042c5458c6bc541cfe0
[INFO] running `Command { std: "docker" "start" "-a" "ee39f3ddc3c1eaf68a6251f5d3026b62339b01826921f042c5458c6bc541cfe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee39f3ddc3c1eaf68a6251f5d3026b62339b01826921f042c5458c6bc541cfe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee39f3ddc3c1eaf68a6251f5d3026b62339b01826921f042c5458c6bc541cfe0", kill_on_drop: false }`
[INFO] [stdout] ee39f3ddc3c1eaf68a6251f5d3026b62339b01826921f042c5458c6bc541cfe0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4df69b3a153bd5c2803c3461022a0a39b96964ed3ce209126058ab96241049de
[INFO] running `Command { std: "docker" "start" "-a" "4df69b3a153bd5c2803c3461022a0a39b96964ed3ce209126058ab96241049de", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling racker-common v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `heads` and `workers` are never read
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Cluster {
[INFO] [stdout]   |            ------- fields in this struct
[INFO] [stdout] 6 |     heads: Vec<Head>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `meta` are never read
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Head {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     meta: HeadMeta,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Worker {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 16 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `network` is never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct HeadMeta {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 20 |     network: Network,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.81s
[INFO] running `Command { std: "docker" "inspect" "4df69b3a153bd5c2803c3461022a0a39b96964ed3ce209126058ab96241049de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4df69b3a153bd5c2803c3461022a0a39b96964ed3ce209126058ab96241049de", kill_on_drop: false }`
[INFO] [stdout] 4df69b3a153bd5c2803c3461022a0a39b96964ed3ce209126058ab96241049de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05d9254b478e63dc9fcb235bf8eeff217a9dda8dc49a16d330ca692feb9c7782
[INFO] running `Command { std: "docker" "start" "-a" "05d9254b478e63dc9fcb235bf8eeff217a9dda8dc49a16d330ca692feb9c7782", kill_on_drop: false }`
[INFO] [stderr]    Compiling racker-common v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `heads` and `workers` are never read
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Cluster {
[INFO] [stdout]   |            ------- fields in this struct
[INFO] [stdout] 6 |     heads: Vec<Head>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `meta` are never read
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Head {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     meta: HeadMeta,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Worker {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 16 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `network` is never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct HeadMeta {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 20 |     network: Network,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `heads` and `workers` are never read
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Cluster {
[INFO] [stdout]   |            ------- fields in this struct
[INFO] [stdout] 6 |     heads: Vec<Head>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `meta` are never read
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Head {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     meta: HeadMeta,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Worker {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 16 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `network` is never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct HeadMeta {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 20 |     network: Network,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "05d9254b478e63dc9fcb235bf8eeff217a9dda8dc49a16d330ca692feb9c7782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05d9254b478e63dc9fcb235bf8eeff217a9dda8dc49a16d330ca692feb9c7782", kill_on_drop: false }`
[INFO] [stdout] 05d9254b478e63dc9fcb235bf8eeff217a9dda8dc49a16d330ca692feb9c7782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 280b872a36fd25258ad0797893ac9f56625c2562ecfd2e5769c983fe98dcb497
[INFO] running `Command { std: "docker" "start" "-a" "280b872a36fd25258ad0797893ac9f56625c2562ecfd2e5769c983fe98dcb497", kill_on_drop: false }`
[INFO] [stderr] warning: fields `heads` and `workers` are never read
[INFO] [stderr]  --> src/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Cluster {
[INFO] [stderr]   |            ------- fields in this struct
[INFO] [stderr] 6 |     heads: Vec<Head>,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 7 |     workers: Vec<Worker>,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `name` and `meta` are never read
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Head {
[INFO] [stderr]    |            ---- fields in this struct
[INFO] [stderr] 11 |     name: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 12 |     meta: HeadMeta,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]   --> src/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct Worker {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] 16 |     name: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `network` is never read
[INFO] [stderr]   --> src/lib.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct HeadMeta {
[INFO] [stderr]    |            -------- field in this struct
[INFO] [stderr] 20 |     network: Network,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `racker-common` (lib) generated 4 warnings
[INFO] [stderr] warning: `racker-common` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/racker_common-0282ca4afa1e62d7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests racker_common
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "280b872a36fd25258ad0797893ac9f56625c2562ecfd2e5769c983fe98dcb497", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "280b872a36fd25258ad0797893ac9f56625c2562ecfd2e5769c983fe98dcb497", kill_on_drop: false }`
[INFO] [stdout] 280b872a36fd25258ad0797893ac9f56625c2562ecfd2e5769c983fe98dcb497