[INFO] cloning repository https://github.com/Arandur/tryst
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Arandur/tryst" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArandur%2Ftryst", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArandur%2Ftryst'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5aa700d3327ed3f784cdf85f07c74794f69b7cc
[INFO] building Arandur/tryst against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArandur%2Ftryst" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Arandur/tryst on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Arandur/tryst
[INFO] finished tweaking git repo https://github.com/Arandur/tryst
[INFO] tweaked toml for git repo https://github.com/Arandur/tryst written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Arandur/tryst 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f54f403552310d7828f3d1c9033ffe537554e739a1b0052ff2ba76243289a875
[INFO] running `Command { std: "docker" "start" "-a" "f54f403552310d7828f3d1c9033ffe537554e739a1b0052ff2ba76243289a875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f54f403552310d7828f3d1c9033ffe537554e739a1b0052ff2ba76243289a875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f54f403552310d7828f3d1c9033ffe537554e739a1b0052ff2ba76243289a875", kill_on_drop: false }`
[INFO] [stdout] f54f403552310d7828f3d1c9033ffe537554e739a1b0052ff2ba76243289a875
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60951b1355530f887ddc5b8a858d7ccf9c6aca6396dee808475fa585911e83bf
[INFO] running `Command { std: "docker" "start" "-a" "60951b1355530f887ddc5b8a858d7ccf9c6aca6396dee808475fa585911e83bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling tryst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `lexer` is never used
[INFO] [stdout]   --> src/read/lexer/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn lexer<R: Read>(source: R) -> Lexer<R> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chars` is never used
[INFO] [stdout]   --> src/read/lexer/chars/mod.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn chars<R: Read>(r: R) -> Chars<R> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/read/lexer/chars/utf8_char_sink.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Utf8CharSink {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 13 |     pub fn new() -> Utf8CharSink {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "60951b1355530f887ddc5b8a858d7ccf9c6aca6396dee808475fa585911e83bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60951b1355530f887ddc5b8a858d7ccf9c6aca6396dee808475fa585911e83bf", kill_on_drop: false }`
[INFO] [stdout] 60951b1355530f887ddc5b8a858d7ccf9c6aca6396dee808475fa585911e83bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d44bcbff98f311d028d21dd1701a3dbc468b823483a8c7e06b94bf31db7cdea
[INFO] running `Command { std: "docker" "start" "-a" "7d44bcbff98f311d028d21dd1701a3dbc468b823483a8c7e06b94bf31db7cdea", kill_on_drop: false }`
[INFO] [stdout] warning: function `lexer` is never used
[INFO] [stdout]   --> src/read/lexer/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn lexer<R: Read>(source: R) -> Lexer<R> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chars` is never used
[INFO] [stdout]   --> src/read/lexer/chars/mod.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn chars<R: Read>(r: R) -> Chars<R> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tryst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/read/lexer/chars/utf8_char_sink.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Utf8CharSink {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 13 |     pub fn new() -> Utf8CharSink {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "7d44bcbff98f311d028d21dd1701a3dbc468b823483a8c7e06b94bf31db7cdea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d44bcbff98f311d028d21dd1701a3dbc468b823483a8c7e06b94bf31db7cdea", kill_on_drop: false }`
[INFO] [stdout] 7d44bcbff98f311d028d21dd1701a3dbc468b823483a8c7e06b94bf31db7cdea