[INFO] fetching crate raster2svg 1.0.14...
[INFO] checking raster2svg-1.0.14 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate raster2svg 1.0.14 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate raster2svg 1.0.14 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 raster2svg 1.0.14
[INFO] finished tweaking crates.io crate raster2svg 1.0.14
[INFO] tweaked toml for crates.io crate raster2svg 1.0.14 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate raster2svg 1.0.14 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded png v0.17.3
[INFO] [stderr]   Downloaded nanorand v0.6.1
[INFO] [stderr]   Downloaded weezl v0.1.5
[INFO] [stderr]   Downloaded bytemuck v1.7.3
[INFO] [stderr]   Downloaded lock_api v0.4.6
[INFO] [stderr]   Downloaded exr v1.4.1
[INFO] [stderr]   Downloaded image v0.24.1
[INFO] [stderr]   Downloaded spin v0.9.2
[INFO] [stderr]   Downloaded flume v0.10.11
[INFO] [stderr]   Downloaded jpeg-decoder v0.2.2
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.7
[INFO] [stderr]   Downloaded tiff v0.7.1
[INFO] [stderr]   Downloaded contour_tracing v1.0.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 15bd271c6248b4584c4f69d36f2c2a98de766cac50cf07e4a0b6f39511901c81
[INFO] running `Command { std: "docker" "start" "-a" "15bd271c6248b4584c4f69d36f2c2a98de766cac50cf07e4a0b6f39511901c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15bd271c6248b4584c4f69d36f2c2a98de766cac50cf07e4a0b6f39511901c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15bd271c6248b4584c4f69d36f2c2a98de766cac50cf07e4a0b6f39511901c81", kill_on_drop: false }`
[INFO] [stdout] 15bd271c6248b4584c4f69d36f2c2a98de766cac50cf07e4a0b6f39511901c81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d683c2fae5e55bc399a2a6ccb7c9de06329acba20a26010a9d0ba4d4014f9693
[INFO] running `Command { std: "docker" "start" "-a" "d683c2fae5e55bc399a2a6ccb7c9de06329acba20a26010a9d0ba4d4014f9693", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking bytemuck v1.7.3
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking contour_tracing v1.0.12
[INFO] [stderr]     Checking png v0.17.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.11
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Checking raster2svg v1.0.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/main.rs:12:69
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::{process, collections::BTreeMap, fs::File, io::prelude::*, iter::FromIterator};
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/main.rs:12:69
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::{process, collections::BTreeMap, fs::File, io::prelude::*, iter::FromIterator};
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.77s
[INFO] running `Command { std: "docker" "inspect" "d683c2fae5e55bc399a2a6ccb7c9de06329acba20a26010a9d0ba4d4014f9693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d683c2fae5e55bc399a2a6ccb7c9de06329acba20a26010a9d0ba4d4014f9693", kill_on_drop: false }`
[INFO] [stdout] d683c2fae5e55bc399a2a6ccb7c9de06329acba20a26010a9d0ba4d4014f9693
[INFO] checking raster2svg-1.0.14 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate raster2svg 1.0.14 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate raster2svg 1.0.14 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate raster2svg 1.0.14
[INFO] finished tweaking crates.io crate raster2svg 1.0.14
[INFO] tweaked toml for crates.io crate raster2svg 1.0.14 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate raster2svg 1.0.14 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e85dfd6fa2cc4773ad57382da6626a52a2a1b7231f8f7242bce6de73ad60415b
[INFO] running `Command { std: "docker" "start" "-a" "e85dfd6fa2cc4773ad57382da6626a52a2a1b7231f8f7242bce6de73ad60415b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e85dfd6fa2cc4773ad57382da6626a52a2a1b7231f8f7242bce6de73ad60415b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e85dfd6fa2cc4773ad57382da6626a52a2a1b7231f8f7242bce6de73ad60415b", kill_on_drop: false }`
[INFO] [stdout] e85dfd6fa2cc4773ad57382da6626a52a2a1b7231f8f7242bce6de73ad60415b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23681fd1470bb20c796b3870beabd666f33fb38d6ded5e0e3fb311058941e566
[INFO] running `Command { std: "docker" "start" "-a" "23681fd1470bb20c796b3870beabd666f33fb38d6ded5e0e3fb311058941e566", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking bytemuck v1.7.3
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking contour_tracing v1.0.12
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking png v0.17.3
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.11
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Checking raster2svg v1.0.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/main.rs:12:69
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::{process, collections::BTreeMap, fs::File, io::prelude::*, iter::FromIterator};
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/main.rs:12:69
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::{process, collections::BTreeMap, fs::File, io::prelude::*, iter::FromIterator};
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.11s
[INFO] running `Command { std: "docker" "inspect" "23681fd1470bb20c796b3870beabd666f33fb38d6ded5e0e3fb311058941e566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23681fd1470bb20c796b3870beabd666f33fb38d6ded5e0e3fb311058941e566", kill_on_drop: false }`
[INFO] [stdout] 23681fd1470bb20c796b3870beabd666f33fb38d6ded5e0e3fb311058941e566