[INFO] fetching crate conv 0.3.3...
[INFO] checking conv-0.3.3 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate conv 0.3.3 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate conv 0.3.3 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate conv 0.3.3
[INFO] finished tweaking crates.io crate conv 0.3.3
[INFO] tweaked toml for crates.io crate conv 0.3.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.22)
[INFO] [stderr]       Adding quickcheck v0.2.24 (available: v0.2.27)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (available: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (available: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (available: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (available: v0.8.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b008b033ff2e94bdd5feacb2631ad50d5d52b0caee2401c2f76aa70839882b0
[INFO] running `Command { std: "docker" "start" "-a" "9b008b033ff2e94bdd5feacb2631ad50d5d52b0caee2401c2f76aa70839882b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b008b033ff2e94bdd5feacb2631ad50d5d52b0caee2401c2f76aa70839882b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b008b033ff2e94bdd5feacb2631ad50d5d52b0caee2401c2f76aa70839882b0", kill_on_drop: false }`
[INFO] [stdout] 9b008b033ff2e94bdd5feacb2631ad50d5d52b0caee2401c2f76aa70839882b0
[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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30888b597ab536f68deeed3b9ed7cc8d3fbd8eb22fda2f13a6098e16de19cc2f
[INFO] running `Command { std: "docker" "start" "-a" "30888b597ab536f68deeed3b9ed7cc8d3fbd8eb22fda2f13a6098e16de19cc2f", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking conv v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking quickcheck v0.2.24
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> tests/derive_try_from.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use] extern crate conv;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `SL`
[INFO] [stdout]  --> tests/util/mod.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | macro_rules! SL {
[INFO] [stdout]   |              ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `as_expr`
[INFO] [stdout]  --> tests/util/mod.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | macro_rules! as_expr {
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `check`
[INFO] [stdout]  --> tests/util/mod.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 | macro_rules! check {
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `for_bitness`
[INFO] [stdout]    --> tests/util/mod.rs:491:14
[INFO] [stdout]     |
[INFO] [stdout] 491 | macro_rules! for_bitness {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `SL`
[INFO] [stdout]  --> tests/util/mod.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | macro_rules! SL {
[INFO] [stdout]   |              ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `check`
[INFO] [stdout]  --> tests/util/mod.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 | macro_rules! check {
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `as_expr`
[INFO] [stdout]  --> tests/util/mod.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | macro_rules! as_expr {
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `for_bitness`
[INFO] [stdout]    --> tests/util/mod.rs:491:14
[INFO] [stdout]     |
[INFO] [stdout] 491 | macro_rules! for_bitness {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "30888b597ab536f68deeed3b9ed7cc8d3fbd8eb22fda2f13a6098e16de19cc2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30888b597ab536f68deeed3b9ed7cc8d3fbd8eb22fda2f13a6098e16de19cc2f", kill_on_drop: false }`
[INFO] [stdout] 30888b597ab536f68deeed3b9ed7cc8d3fbd8eb22fda2f13a6098e16de19cc2f