[INFO] cloning repository https://github.com/FauxFaux/fetch-maybe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FauxFaux/fetch-maybe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Ffetch-maybe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Ffetch-maybe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31b719b0d87cdc2f5aaddc99d5337655eaf9f21f
[INFO] checking FauxFaux/fetch-maybe/31b719b0d87cdc2f5aaddc99d5337655eaf9f21f against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Ffetch-maybe" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FauxFaux/fetch-maybe 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 git repo https://github.com/FauxFaux/fetch-maybe
[INFO] finished tweaking git repo https://github.com/FauxFaux/fetch-maybe
[INFO] tweaked toml for git repo https://github.com/FauxFaux/fetch-maybe written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/FauxFaux/fetch-maybe already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ec7f2936fa3c4e973ba4818dfea6bdfcb03b79e9f11c880ff60517017d94bff2
[INFO] running `Command { std: "docker" "start" "-a" "ec7f2936fa3c4e973ba4818dfea6bdfcb03b79e9f11c880ff60517017d94bff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec7f2936fa3c4e973ba4818dfea6bdfcb03b79e9f11c880ff60517017d94bff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec7f2936fa3c4e973ba4818dfea6bdfcb03b79e9f11c880ff60517017d94bff2", kill_on_drop: false }`
[INFO] [stdout] ec7f2936fa3c4e973ba4818dfea6bdfcb03b79e9f11c880ff60517017d94bff2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 91b2f5145a14db704b6f78a48290b70fe5a8ceda9b20403d94193e5e2744585c
[INFO] running `Command { std: "docker" "start" "-a" "91b2f5145a14db704b6f78a48290b70fe5a8ceda9b20403d94193e5e2744585c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking qstring v0.6.0
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking chunked_transfer v1.0.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling ring v0.16.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking tempfile-fast v0.3.1
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking webpki v0.21.0
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki-roots v0.17.0
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking ureq v0.11.1
[INFO] [stderr]     Checking fetch-maybe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::error`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use log::error;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::error`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use log::error;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parts` is never constructed
[INFO] [stdout]  --> src/period.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Parts<'s> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/period.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl<'s> Parts<'s> {
[INFO] [stdout]   | ------------------ associated function in this implementation
[INFO] [stdout] 8 |     fn new(inner: &str) -> Parts {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parts` is never constructed
[INFO] [stdout]  --> src/period.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Parts<'s> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/period.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl<'s> Parts<'s> {
[INFO] [stdout]   | ------------------ associated function in this implementation
[INFO] [stdout] 8 |     fn new(inner: &str) -> Parts {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.48s
[INFO] running `Command { std: "docker" "inspect" "91b2f5145a14db704b6f78a48290b70fe5a8ceda9b20403d94193e5e2744585c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91b2f5145a14db704b6f78a48290b70fe5a8ceda9b20403d94193e5e2744585c", kill_on_drop: false }`
[INFO] [stdout] 91b2f5145a14db704b6f78a48290b70fe5a8ceda9b20403d94193e5e2744585c