[INFO] fetching crate mdtoc 0.2.1...
[INFO] testing mdtoc-0.2.1 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate mdtoc 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate mdtoc 0.2.1
[INFO] finished tweaking crates.io crate mdtoc 0.2.1
[INFO] tweaked toml for crates.io crate mdtoc 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdtoc 0.2.1 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdtoc 0.2.1 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2451430be415537f7caf1411eae9ba73881c32efe724cf97412eca49b948132
[INFO] running `Command { std: "docker" "start" "-a" "d2451430be415537f7caf1411eae9ba73881c32efe724cf97412eca49b948132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2451430be415537f7caf1411eae9ba73881c32efe724cf97412eca49b948132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2451430be415537f7caf1411eae9ba73881c32efe724cf97412eca49b948132", kill_on_drop: false }`
[INFO] [stdout] d2451430be415537f7caf1411eae9ba73881c32efe724cf97412eca49b948132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1f24b6ec627d406b19d4e6b54cc5c85e657b1a2eacdcca1d598f39f7bb4977f
[INFO] running `Command { std: "docker" "start" "-a" "c1f24b6ec627d406b19d4e6b54cc5c85e657b1a2eacdcca1d598f39f7bb4977f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling regex-syntax v0.6.10
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling mdtoc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `read_to_string`
[INFO] [stdout]  --> src/parser.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::{read_to_string, File};
[INFO] [stdout]   |               ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lines_from_stdin` is never used
[INFO] [stdout]   --> src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn lines_from_stdin() -> () {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     stdin().lock().lines().map(Result::unwrap);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let _ = stdin().lock().lines().map(Result::unwrap);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.89s
[INFO] running `Command { std: "docker" "inspect" "c1f24b6ec627d406b19d4e6b54cc5c85e657b1a2eacdcca1d598f39f7bb4977f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1f24b6ec627d406b19d4e6b54cc5c85e657b1a2eacdcca1d598f39f7bb4977f", kill_on_drop: false }`
[INFO] [stdout] c1f24b6ec627d406b19d4e6b54cc5c85e657b1a2eacdcca1d598f39f7bb4977f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d01b6e86122acac930c0be1f977559b792a66ad70ffb14f86bb5352ac0fee0b7
[INFO] running `Command { std: "docker" "start" "-a" "d01b6e86122acac930c0be1f977559b792a66ad70ffb14f86bb5352ac0fee0b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling mdtoc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `lines_from_stdin` is never used
[INFO] [stdout]   --> src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn lines_from_stdin() -> () {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     stdin().lock().lines().map(Result::unwrap);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let _ = stdin().lock().lines().map(Result::unwrap);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "d01b6e86122acac930c0be1f977559b792a66ad70ffb14f86bb5352ac0fee0b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d01b6e86122acac930c0be1f977559b792a66ad70ffb14f86bb5352ac0fee0b7", kill_on_drop: false }`
[INFO] [stdout] d01b6e86122acac930c0be1f977559b792a66ad70ffb14f86bb5352ac0fee0b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1e405e30e48b7c653062f37e7d1bd6cb2c17f2b6eac4c7f53d74e8a5c64f46f8
[INFO] running `Command { std: "docker" "start" "-a" "1e405e30e48b7c653062f37e7d1bd6cb2c17f2b6eac4c7f53d74e8a5c64f46f8", kill_on_drop: false }`
[INFO] [stderr] warning: function `lines_from_stdin` is never used
[INFO] [stderr]   --> src/main.rs:10:4
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn lines_from_stdin() -> () {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Map` that must be used
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     stdin().lock().lines().map(Result::unwrap);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let _ = stdin().lock().lines().map(Result::unwrap);
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `mdtoc` (bin "mdtoc" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mdtoc-a96edcce3f38c6e4)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test parser::tests::extra_tags ... ok
[INFO] [stdout] test parser::tests::non_alphanumeric ... ok
[INFO] [stdout] test parser::tests::simple_numbered ... ok
[INFO] [stdout] test parser::tests::simple_asterisk ... ok
[INFO] [stdout] test parser::tests::simple ... ok
[INFO] [stdout] test parser::tests::simple_smaller_indent ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1e405e30e48b7c653062f37e7d1bd6cb2c17f2b6eac4c7f53d74e8a5c64f46f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e405e30e48b7c653062f37e7d1bd6cb2c17f2b6eac4c7f53d74e8a5c64f46f8", kill_on_drop: false }`
[INFO] [stdout] 1e405e30e48b7c653062f37e7d1bd6cb2c17f2b6eac4c7f53d74e8a5c64f46f8