[INFO] fetching crate balena-cdsl 0.10.6...
[INFO] checking balena-cdsl-0.10.6 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate balena-cdsl 0.10.6 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate balena-cdsl 0.10.6
[INFO] finished tweaking crates.io crate balena-cdsl 0.10.6
[INFO] tweaked toml for crates.io crate balena-cdsl 0.10.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate balena-cdsl 0.10.6 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 73 packages to latest compatible versions
[INFO] [stderr]       Adding heck v0.3.3 (available: v0.5.0)
[INFO] [stderr]       Adding pretty_assertions v0.5.1 (available: v1.4.1)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] [stderr]       Adding strfmt v0.1.6 (available: v0.2.4)
[INFO] [stderr]       Adding wasm-bindgen-test v0.2.50 (available: v0.3.50)
[INFO] [stderr]       Adding yaml-merge-keys v0.3.0 (available: v0.8.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 367e4149701df97b7af16771917e6e37ae77e9e039dbc4f88e77a6506abeef92
[INFO] running `Command { std: "docker" "start" "-a" "367e4149701df97b7af16771917e6e37ae77e9e039dbc4f88e77a6506abeef92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "367e4149701df97b7af16771917e6e37ae77e9e039dbc4f88e77a6506abeef92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "367e4149701df97b7af16771917e6e37ae77e9e039dbc4f88e77a6506abeef92", kill_on_drop: false }`
[INFO] [stdout] 367e4149701df97b7af16771917e6e37ae77e9e039dbc4f88e77a6506abeef92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03a7f221ebbb2c3cc718089a15cdcb523397823a8aef03901c6731148c1b86cf
[INFO] running `Command { std: "docker" "start" "-a" "03a7f221ebbb2c3cc718089a15cdcb523397823a8aef03901c6731148c1b86cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking object v0.36.7
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking rustc-demangle v0.1.25
[INFO] [stderr]    Compiling strfmt v0.1.6
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling balena-cdsl v0.10.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stdout] warning: field `message` is never read
[INFO] [stdout]   --> build.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Error {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 48 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking pretty_assertions v0.5.1
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking backtrace v0.3.75
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking yaml-merge-keys v0.3.0
[INFO] [stdout] warning: field `message` is never read
[INFO] [stdout]   --> src/dsl/schema/compiler/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct CompilationError {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 19 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilationError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/output/serialization/object_types.rs:136:18
[INFO] [stdout]     |
[INFO] [stdout] 136 |     for value in default {
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 136 -     for value in default {
[INFO] [stdout] 136 +     while let Some(value) = default {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 136 -     for value in default {
[INFO] [stdout] 136 +     if let Some(value) = default {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/output/serialization/object_types.rs:158:31
[INFO] [stdout]     |
[INFO] [stdout] 158 |     for enumeration_values in bounds {
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     for enumeration_values in bounds {
[INFO] [stdout] 158 +     while let Some(enumeration_values) = bounds {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 158 -     for enumeration_values in bounds {
[INFO] [stdout] 158 +     if let Some(enumeration_values) = bounds {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `message` is never read
[INFO] [stdout]   --> src/dsl/schema/compiler/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct CompilationError {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 19 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilationError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/output/serialization/object_types.rs:136:18
[INFO] [stdout]     |
[INFO] [stdout] 136 |     for value in default {
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 136 -     for value in default {
[INFO] [stdout] 136 +     while let Some(value) = default {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 136 -     for value in default {
[INFO] [stdout] 136 +     if let Some(value) = default {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/output/serialization/object_types.rs:158:31
[INFO] [stdout]     |
[INFO] [stdout] 158 |     for enumeration_values in bounds {
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     for enumeration_values in bounds {
[INFO] [stdout] 158 +     while let Some(enumeration_values) = bounds {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 158 -     for enumeration_values in bounds {
[INFO] [stdout] 158 +     if let Some(enumeration_values) = bounds {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.65s
[INFO] running `Command { std: "docker" "inspect" "03a7f221ebbb2c3cc718089a15cdcb523397823a8aef03901c6731148c1b86cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03a7f221ebbb2c3cc718089a15cdcb523397823a8aef03901c6731148c1b86cf", kill_on_drop: false }`
[INFO] [stdout] 03a7f221ebbb2c3cc718089a15cdcb523397823a8aef03901c6731148c1b86cf