[INFO] fetching crate md2tex 0.1.3...
[INFO] checking md2tex-0.1.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate md2tex 0.1.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate md2tex 0.1.3 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate md2tex 0.1.3
[INFO] finished tweaking crates.io crate md2tex 0.1.3
[INFO] tweaked toml for crates.io crate md2tex 0.1.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 123 packages
[INFO] [stderr]       Adding arrayvec v0.4.12 (latest: v0.7.4)
[INFO] [stderr]       Adding arrayvec v0.5.2 (latest: v0.7.4)
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[INFO] [stderr]       Adding core-text v13.3.2 (latest: v20.1.0)
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[INFO] [stderr]       Adding dwrote v0.9.0 (latest: v0.11.0)
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[INFO] [stderr]       Adding foreign-types v0.3.2 (latest: v0.5.0)
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[INFO] [stderr]       Adding freetype v0.4.1 (latest: v0.7.1)
[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.12)
[INFO] [stderr]       Adding harfbuzz-sys v0.3.4 (latest: v0.5.0)
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[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
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[INFO] [stderr]       Adding libflate v0.1.27 (latest: v2.0.0)
[INFO] [stderr]       Adding lyon_geom v0.12.7 (latest: v1.0.5)
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[INFO] [stderr]       Adding lyon_path v0.14.0 (latest: v1.0.4)
[INFO] [stderr]       Adding num-rational v0.2.4 (latest: v0.4.1)
[INFO] [stderr]       Adding phf v0.7.24 (latest: v0.11.2)
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[INFO] [stderr]       Adding svgtypes v0.4.4 (latest: v0.15.0)
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[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding ttf-parser v0.1.0 (latest: v0.20.0)
[INFO] [stderr]       Adding typed-arena v1.7.0 (latest: v2.0.2)
[INFO] [stderr]       Adding unicode-script v0.3.0 (latest: v0.5.6)
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[INFO] [stderr]       Adding usvg v0.7.0 (latest: v0.41.0)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding xmlparser v0.9.0 (latest: v0.13.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded phf v0.7.24
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[INFO] [stderr]   Downloaded xmlparser v0.9.0
[INFO] [stderr]   Downloaded servo-fontconfig-sys v4.0.9
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[INFO] [stderr]   Downloaded core-text v13.3.2
[INFO] [stderr]   Downloaded ttf-parser v0.1.0
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[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a09207841fcf892e88b2d179b39a630e8626be5cdf356f64ccf406719bda3e4
[INFO] running `Command { std: "docker" "start" "-a" "5a09207841fcf892e88b2d179b39a630e8626be5cdf356f64ccf406719bda3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a09207841fcf892e88b2d179b39a630e8626be5cdf356f64ccf406719bda3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a09207841fcf892e88b2d179b39a630e8626be5cdf356f64ccf406719bda3e4", kill_on_drop: false }`
[INFO] [stdout] 5a09207841fcf892e88b2d179b39a630e8626be5cdf356f64ccf406719bda3e4
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d293084e942a2e50cd60e34710346ef1e8063ca6f9ca4818d9dad7dbe0b6f0ac
[INFO] running `Command { std: "docker" "start" "-a" "d293084e942a2e50cd60e34710346ef1e8063ca6f9ca4818d9dad7dbe0b6f0ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling harfbuzz-sys v0.3.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking xmlparser v0.9.0
[INFO] [stderr]     Checking euclid v0.20.14
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking sw-composite v0.5.10
[INFO] [stderr]     Checking phf_shared v0.7.24
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking rle-decode-fast v1.0.3
[INFO] [stderr]     Checking simplecss v0.1.0
[INFO] [stderr]     Checking data-url v0.1.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]     Checking svgtypes v0.4.4
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking roxmltree v0.6.1
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking unicode-script v0.3.0
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking ttf-parser v0.1.0
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking rctree v0.3.3
[INFO] [stderr]     Checking rgb v0.8.37
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking kurbo v0.2.3
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking svgdom v0.17.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking lyon_geom v0.14.1
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking image v0.21.3
[INFO] [stderr]     Checking harfbuzz_rs v1.2.0
[INFO] [stderr]     Checking lyon_path v0.14.0
[INFO] [stderr]     Checking font-kit v0.4.0
[INFO] [stderr]     Checking usvg v0.7.0
[INFO] [stderr]    Compiling euclid_macros v0.1.0
[INFO] [stderr]     Checking raqote v0.6.4
[INFO] [stderr]     Checking euclid v0.19.9
[INFO] [stderr]     Checking lyon_geom v0.12.7
[INFO] [stderr]     Checking raqote v0.5.5
[INFO] [stderr]     Checking resvg v0.7.0
[INFO] [stderr]     Checking md2tex v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::string::String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `String` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:277:74
[INFO] [stdout]     |
[INFO] [stdout] 277 |                 output.push_str("\\includegraphics[width=\\textwidth]{");;
[INFO] [stdout]     |                                                                          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::string::String;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `String` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `path_str` is never read
[INFO] [stdout]    --> src/lib.rs:254:25
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 let mut path_str = String::new();
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:277:74
[INFO] [stdout]     |
[INFO] [stdout] 277 |                 output.push_str("\\includegraphics[width=\\textwidth]{");;
[INFO] [stdout]     |                                                                          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:470:21
[INFO] [stdout]     |
[INFO] [stdout] 470 |                 let mut lang = String::new();
[INFO] [stdout]     |                     ----^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `path_str` is never read
[INFO] [stdout]    --> src/lib.rs:254:25
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 let mut path_str = String::new();
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:470:21
[INFO] [stdout]     |
[INFO] [stdout] 470 |                 let mut lang = String::new();
[INFO] [stdout]     |                     ----^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.51s
[INFO] running `Command { std: "docker" "inspect" "d293084e942a2e50cd60e34710346ef1e8063ca6f9ca4818d9dad7dbe0b6f0ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d293084e942a2e50cd60e34710346ef1e8063ca6f9ca4818d9dad7dbe0b6f0ac", kill_on_drop: false }`
[INFO] [stdout] d293084e942a2e50cd60e34710346ef1e8063ca6f9ca4818d9dad7dbe0b6f0ac