[INFO] fetching crate stego 0.1.4...
[INFO] building stego-0.1.4 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate stego 0.1.4 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate stego 0.1.4
[INFO] finished tweaking crates.io crate stego 0.1.4
[INFO] tweaked toml for crates.io crate stego 0.1.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stego 0.1.4 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 86 packages to latest compatible versions
[INFO] [stderr]       Adding image v0.21.3 (available: v0.25.8)
[INFO] [stderr]       Adding pretty_env_logger v0.3.1 (available: v0.5.0)
[INFO] [stderr]       Adding structopt v0.2.18 (available: v0.3.26)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vec_map v0.8.2
[INFO] [stderr]   Downloaded unicode-xid v0.1.0
[INFO] [stderr]   Downloaded heck v0.3.3
[INFO] [stderr]   Downloaded proc-macro2 v0.4.30
[INFO] [stderr]   Downloaded color_quant v1.1.0
[INFO] [stderr]   Downloaded scoped_threadpool v0.1.9
[INFO] [stderr]   Downloaded structopt v0.2.18
[INFO] [stderr]   Downloaded quote v0.6.13
[INFO] [stderr]   Downloaded inflate v0.4.5
[INFO] [stderr]   Downloaded gif v0.10.3
[INFO] [stderr]   Downloaded env_logger v0.6.2
[INFO] [stderr]   Downloaded rayon-core v1.13.0
[INFO] [stderr]   Downloaded ansi_term v0.12.1
[INFO] [stderr]   Downloaded num-rational v0.2.4
[INFO] [stderr]   Downloaded deflate v0.7.20
[INFO] [stderr]   Downloaded image v0.21.3
[INFO] [stderr]   Downloaded rayon v1.11.0
[INFO] [stderr]   Downloaded clap v2.34.0
[INFO] [stderr]   Downloaded syn v0.15.44
[INFO] [stderr]   Downloaded png v0.14.1
[INFO] [stderr]   Downloaded lzw v0.10.0
[INFO] [stderr]   Downloaded pretty_env_logger v0.3.1
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.22
[INFO] [stderr]   Downloaded unicode-width v0.1.14
[INFO] [stderr]   Downloaded strsim v0.8.0
[INFO] [stderr]   Downloaded num-derive v0.2.5
[INFO] [stderr]   Downloaded quick-error v1.2.3
[INFO] [stderr]   Downloaded humantime v1.3.0
[INFO] [stderr]   Downloaded textwrap v0.11.0
[INFO] [stderr]   Downloaded structopt-derive v0.2.18
[INFO] [stderr]   Downloaded tiff v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d51d847d3d17afe41bb77f1bf9bad7d00e06794700c9983ea355b6764cf0836
[INFO] running `Command { std: "docker" "start" "-a" "7d51d847d3d17afe41bb77f1bf9bad7d00e06794700c9983ea355b6764cf0836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d51d847d3d17afe41bb77f1bf9bad7d00e06794700c9983ea355b6764cf0836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d51d847d3d17afe41bb77f1bf9bad7d00e06794700c9983ea355b6764cf0836", kill_on_drop: false }`
[INFO] [stdout] 7d51d847d3d17afe41bb77f1bf9bad7d00e06794700c9983ea355b6764cf0836
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c15d006d75658726b67a68dd46422eb670d96ac9c2acee5c950836d39cb7df44
[INFO] running `Command { std: "docker" "start" "-a" "c15d006d75658726b67a68dd46422eb670d96ac9c2acee5c950836d39cb7df44", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling iana-time-zone v0.1.64
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling gif v0.10.3
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling image v0.21.3
[INFO] [stderr]    Compiling pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling stego v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:111:17
[INFO] [stdout]     |
[INFO] [stdout] 111 |             let mut im2;
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 44.96s
[INFO] running `Command { std: "docker" "inspect" "c15d006d75658726b67a68dd46422eb670d96ac9c2acee5c950836d39cb7df44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c15d006d75658726b67a68dd46422eb670d96ac9c2acee5c950836d39cb7df44", kill_on_drop: false }`
[INFO] [stdout] c15d006d75658726b67a68dd46422eb670d96ac9c2acee5c950836d39cb7df44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50679e942adf71b07196de4b47bf9692d63e113329be10fc3991fda3430ee79f
[INFO] running `Command { std: "docker" "start" "-a" "50679e942adf71b07196de4b47bf9692d63e113329be10fc3991fda3430ee79f", kill_on_drop: false }`
[INFO] [stderr]    Compiling stego v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:111:17
[INFO] [stdout]     |
[INFO] [stdout] 111 |             let mut im2;
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:111:17
[INFO] [stdout]     |
[INFO] [stdout] 111 |             let mut im2;
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "50679e942adf71b07196de4b47bf9692d63e113329be10fc3991fda3430ee79f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50679e942adf71b07196de4b47bf9692d63e113329be10fc3991fda3430ee79f", kill_on_drop: false }`
[INFO] [stdout] 50679e942adf71b07196de4b47bf9692d63e113329be10fc3991fda3430ee79f
