[INFO] fetching crate serde-lwjson 0.2.1...
[INFO] testing serde-lwjson-0.2.1 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate serde-lwjson 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate serde-lwjson 0.2.1
[INFO] finished tweaking crates.io crate serde-lwjson 0.2.1
[INFO] tweaked toml for crates.io crate serde-lwjson 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde-lwjson 0.2.1 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding prettyplease v0.1.25 (available: v0.2.37)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc52a062ec16c23e3830deb928f48ab04ea40a91c9f0124505497f61641a24d3
[INFO] running `Command { std: "docker" "start" "-a" "bc52a062ec16c23e3830deb928f48ab04ea40a91c9f0124505497f61641a24d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc52a062ec16c23e3830deb928f48ab04ea40a91c9f0124505497f61641a24d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc52a062ec16c23e3830deb928f48ab04ea40a91c9f0124505497f61641a24d3", kill_on_drop: false }`
[INFO] [stdout] bc52a062ec16c23e3830deb928f48ab04ea40a91c9f0124505497f61641a24d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bc936fa74c3d583d019c6859fa75507876712913bf1074e7553cbbc60c561f0
[INFO] running `Command { std: "docker" "start" "-a" "1bc936fa74c3d583d019c6859fa75507876712913bf1074e7553cbbc60c561f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling prettyplease v0.1.25
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling uriparse v0.6.4
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling regex v1.11.2
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling schemafy_core v0.6.0
[INFO] [stderr]    Compiling schemafy_lib v0.6.0
[INFO] [stderr]    Compiling serde-lwjson v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lwjson.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for repositories in &self.repositories {
[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] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         while let Some(repositories) = &self.repositories {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         if let Some(repositories) = &self.repositories {
[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/lwjson.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |         for artifacts in &self.artifacts {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         while let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         if let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.50s
[INFO] running `Command { std: "docker" "inspect" "1bc936fa74c3d583d019c6859fa75507876712913bf1074e7553cbbc60c561f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bc936fa74c3d583d019c6859fa75507876712913bf1074e7553cbbc60c561f0", kill_on_drop: false }`
[INFO] [stdout] 1bc936fa74c3d583d019c6859fa75507876712913bf1074e7553cbbc60c561f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6e5e455ec4a04c32e515c36d488a166f6b09b4637a2dab8f2c9a3a1757f19da
[INFO] running `Command { std: "docker" "start" "-a" "b6e5e455ec4a04c32e515c36d488a166f6b09b4637a2dab8f2c9a3a1757f19da", kill_on_drop: false }`
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lwjson.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for repositories in &self.repositories {
[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] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         while let Some(repositories) = &self.repositories {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         if let Some(repositories) = &self.repositories {
[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/lwjson.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |         for artifacts in &self.artifacts {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         while let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         if let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde-lwjson v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lwjson.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for repositories in &self.repositories {
[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] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         while let Some(repositories) = &self.repositories {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         if let Some(repositories) = &self.repositories {
[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/lwjson.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |         for artifacts in &self.artifacts {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         while let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         if let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "b6e5e455ec4a04c32e515c36d488a166f6b09b4637a2dab8f2c9a3a1757f19da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6e5e455ec4a04c32e515c36d488a166f6b09b4637a2dab8f2c9a3a1757f19da", kill_on_drop: false }`
[INFO] [stdout] b6e5e455ec4a04c32e515c36d488a166f6b09b4637a2dab8f2c9a3a1757f19da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8ab389d955a6460ef53bbf3dff425a7a4c18cc4c94ded1ad88360eb047578150
[INFO] running `Command { std: "docker" "start" "-a" "8ab389d955a6460ef53bbf3dff425a7a4c18cc4c94ded1ad88360eb047578150", kill_on_drop: false }`
[INFO] [stderr] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stderr]   --> src/lwjson.rs:13:29
[INFO] [stderr]    |
[INFO] [stderr] 13 |         for repositories in &self.repositories {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]    |
[INFO] [stderr] 13 -         for repositories in &self.repositories {
[INFO] [stderr] 13 +         while let Some(repositories) = &self.repositories {
[INFO] [stderr]    |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]    |
[INFO] [stderr] 13 -         for repositories in &self.repositories {
[INFO] [stderr] 13 +         if let Some(repositories) = &self.repositories {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stderr]   --> src/lwjson.rs:23:26
[INFO] [stderr]    |
[INFO] [stderr] 23 |         for artifacts in &self.artifacts {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]    |
[INFO] [stderr] 23 -         for artifacts in &self.artifacts {
[INFO] [stderr] 23 +         while let Some(artifacts) = &self.artifacts {
[INFO] [stderr]    |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]    |
[INFO] [stderr] 23 -         for artifacts in &self.artifacts {
[INFO] [stderr] 23 +         if let Some(artifacts) = &self.artifacts {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `serde-lwjson` (lib) generated 2 warnings
[INFO] [stderr] warning: `serde-lwjson` (lib test) generated 2 warnings (2 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/serde_lwjson-b25f91eec1eb092d)
[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]      Running tests/lwjson.rs (/opt/rustwide/target/debug/deps/lwjson-8655f42a43d4ad63)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_serialize_simple ... ok
[INFO] [stdout] test test_deserialize_simple ... ok
[INFO] [stdout] test test_deserialize_full ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_lwjson
[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" "8ab389d955a6460ef53bbf3dff425a7a4c18cc4c94ded1ad88360eb047578150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab389d955a6460ef53bbf3dff425a7a4c18cc4c94ded1ad88360eb047578150", kill_on_drop: false }`
[INFO] [stdout] 8ab389d955a6460ef53bbf3dff425a7a4c18cc4c94ded1ad88360eb047578150