[INFO] fetching crate errer_derive 0.13.1...
[INFO] testing errer_derive-0.13.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate errer_derive 0.13.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate errer_derive 0.13.1
[INFO] finished tweaking crates.io crate errer_derive 0.13.1
[INFO] tweaked toml for crates.io crate errer_derive 0.13.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate errer_derive 0.13.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (available: v1.0.103)
[INFO] [stderr]       Adding quote v0.6.13 (available: v1.0.42)
[INFO] [stderr]       Adding syn v0.15.44 (available: v2.0.110)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b59ec7c4443acf14bf68a57d4cb6c212a06fa1396edbcb0383dbcd92a1d68b3b
[INFO] running `Command { std: "docker" "start" "-a" "b59ec7c4443acf14bf68a57d4cb6c212a06fa1396edbcb0383dbcd92a1d68b3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b59ec7c4443acf14bf68a57d4cb6c212a06fa1396edbcb0383dbcd92a1d68b3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b59ec7c4443acf14bf68a57d4cb6c212a06fa1396edbcb0383dbcd92a1d68b3b", kill_on_drop: false }`
[INFO] [stdout] b59ec7c4443acf14bf68a57d4cb6c212a06fa1396edbcb0383dbcd92a1d68b3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f94a8e8cf838e80dd650dbee82115970cd3ee0b6c842077658cb8b85ecb9d462
[INFO] running `Command { std: "docker" "start" "-a" "f94a8e8cf838e80dd650dbee82115970cd3ee0b6c842077658cb8b85ecb9d462", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling errer v0.13.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling errer_derive v0.13.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:396:30
[INFO] [stdout]     |
[INFO] [stdout] 396 |                     for x in from {
[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] 396 -                     for x in from {
[INFO] [stdout] 396 +                     while let Some(x) = from {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 396 -                     for x in from {
[INFO] [stdout] 396 +                     if let Some(x) = from {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.08s
[INFO] running `Command { std: "docker" "inspect" "f94a8e8cf838e80dd650dbee82115970cd3ee0b6c842077658cb8b85ecb9d462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f94a8e8cf838e80dd650dbee82115970cd3ee0b6c842077658cb8b85ecb9d462", kill_on_drop: false }`
[INFO] [stdout] f94a8e8cf838e80dd650dbee82115970cd3ee0b6c842077658cb8b85ecb9d462
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b500b9bbb69bed0ba4d50326648db0eb8346f9db1e95cc6caba57a3e89e29cf5
[INFO] running `Command { std: "docker" "start" "-a" "b500b9bbb69bed0ba4d50326648db0eb8346f9db1e95cc6caba57a3e89e29cf5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling errer v0.13.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling errer_derive v0.13.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:396:30
[INFO] [stdout]     |
[INFO] [stdout] 396 |                     for x in from {
[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] 396 -                     for x in from {
[INFO] [stdout] 396 +                     while let Some(x) = from {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 396 -                     for x in from {
[INFO] [stdout] 396 +                     if let Some(x) = from {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:396:30
[INFO] [stdout]     |
[INFO] [stdout] 396 |                     for x in from {
[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] 396 -                     for x in from {
[INFO] [stdout] 396 +                     while let Some(x) = from {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 396 -                     for x in from {
[INFO] [stdout] 396 +                     if let Some(x) = from {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdTest` is never constructed
[INFO] [stdout]   --> tests/main.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct StdTest (#[errer(std, from)] io::Error);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `StdEnumTest` is never used
[INFO] [stdout]   --> tests/main.rs:65:6
[INFO] [stdout]    |
[INFO] [stdout] 65 | enum StdEnumTest {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.39s
[INFO] running `Command { std: "docker" "inspect" "b500b9bbb69bed0ba4d50326648db0eb8346f9db1e95cc6caba57a3e89e29cf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b500b9bbb69bed0ba4d50326648db0eb8346f9db1e95cc6caba57a3e89e29cf5", kill_on_drop: false }`
[INFO] [stdout] b500b9bbb69bed0ba4d50326648db0eb8346f9db1e95cc6caba57a3e89e29cf5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bb8dc5c0f2d67f051b89b16873e175936e3326989a6e61677178712474c27b0c
[INFO] running `Command { std: "docker" "start" "-a" "bb8dc5c0f2d67f051b89b16873e175936e3326989a6e61677178712474c27b0c", kill_on_drop: false }`
[INFO] [stderr] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stderr]    --> src/lib.rs:396:30
[INFO] [stderr]     |
[INFO] [stderr] 396 |                     for x in from {
[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] 396 -                     for x in from {
[INFO] [stderr] 396 +                     while let Some(x) = from {
[INFO] [stderr]     |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]     |
[INFO] [stderr] 396 -                     for x in from {
[INFO] [stderr] 396 +                     if let Some(x) = from {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `errer_derive` (lib) generated 1 warning
[INFO] [stderr] warning: `errer_derive` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: struct `StdTest` is never constructed
[INFO] [stderr]   --> tests/main.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 | struct StdTest (#[errer(std, from)] io::Error);
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `StdEnumTest` is never used
[INFO] [stderr]   --> tests/main.rs:65:6
[INFO] [stderr]    |
[INFO] [stderr] 65 | enum StdEnumTest {
[INFO] [stderr]    |      ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `errer_derive` (test "main") generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/errer_derive-12f5eb95285158f5)
[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/main.rs (/opt/rustwide/target/debug/deps/main-1b5178127aa2006f)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test enum_display ... ok
[INFO] [stdout] test context ... ok
[INFO] [stdout] test macro_test3::main_test ... ok
[INFO] [stdout] test from_tests ... ok
[INFO] [stdout] test struct_display ... ok
[INFO] [stdout] test macro_test::main_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests errer_derive
[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" "bb8dc5c0f2d67f051b89b16873e175936e3326989a6e61677178712474c27b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb8dc5c0f2d67f051b89b16873e175936e3326989a6e61677178712474c27b0c", kill_on_drop: false }`
[INFO] [stdout] bb8dc5c0f2d67f051b89b16873e175936e3326989a6e61677178712474c27b0c