[INFO] cloning repository https://github.com/jtbeckha/mp3v0fs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jtbeckha/mp3v0fs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtbeckha%2Fmp3v0fs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtbeckha%2Fmp3v0fs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 296d69cbaa39f7aef153d23bc4a0c2b5052e1c23
[INFO] checking jtbeckha/mp3v0fs against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtbeckha%2Fmp3v0fs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jtbeckha/mp3v0fs
[INFO] finished tweaking git repo https://github.com/jtbeckha/mp3v0fs
[INFO] tweaked toml for git repo https://github.com/jtbeckha/mp3v0fs written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jtbeckha/mp3v0fs on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jtbeckha/mp3v0fs 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" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "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 darling_macro v0.9.0
[INFO] [stderr]   Downloaded derive_builder_core v0.5.0
[INFO] [stderr]   Downloaded derive_builder v0.7.2
[INFO] [stderr]   Downloaded darling_core v0.9.0
[INFO] [stderr]   Downloaded darling v0.9.0
[INFO] [stderr]   Downloaded id3 v0.3.0
[INFO] [stderr]   Downloaded simplemad_sys v0.5.0
[INFO] [stderr]   Downloaded lame-sys v0.1.2
[INFO] [stderr]   Downloaded simplemad v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52fdfbd285df34ec1c3d0f0ad5a5fb13971975f7a66941ad29ad9bf7aa3eebc3
[INFO] running `Command { std: "docker" "start" "-a" "52fdfbd285df34ec1c3d0f0ad5a5fb13971975f7a66941ad29ad9bf7aa3eebc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52fdfbd285df34ec1c3d0f0ad5a5fb13971975f7a66941ad29ad9bf7aa3eebc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fdfbd285df34ec1c3d0f0ad5a5fb13971975f7a66941ad29ad9bf7aa3eebc3", kill_on_drop: false }`
[INFO] [stdout] 52fdfbd285df34ec1c3d0f0ad5a5fb13971975f7a66941ad29ad9bf7aa3eebc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d52823360023beb0e6cce7f7b9214563bbd39a39457193490ebeb8720cf1203c
[INFO] running `Command { std: "docker" "start" "-a" "d52823360023beb0e6cce7f7b9214563bbd39a39457193490ebeb8720cf1203c", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking miniz_oxide v0.3.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]    Compiling fuse-sys v0.4.0-dev (https://github.com/zargony/fuse-rs.git?rev=42e29d964e2b24e32e21b179b77e4d0d0a0857ac#42e29d96)
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]    Compiling lame-sys v0.1.2
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking flate2 v1.0.12
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking fuse-abi v0.4.0-dev (https://github.com/zargony/fuse-rs.git?rev=42e29d964e2b24e32e21b179b77e4d0d0a0857ac#42e29d96)
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking fuse v0.4.0-dev (https://github.com/zargony/fuse-rs.git?rev=42e29d964e2b24e32e21b179b77e4d0d0a0857ac#42e29d96)
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking claxon v0.4.2 (https://github.com/jtbeckha/claxon.git#38ec00b5)
[INFO] [stderr]    Compiling simplemad_sys v0.5.0
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking simplelog v0.5.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking simplemad v0.9.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling derive_builder_core v0.5.0
[INFO] [stderr]     Checking id3 v0.3.0
[INFO] [stderr]     Checking mp3v0fs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/inode.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut inode_entry = match self.inodes_by_path.get_mut(path) {
[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: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/encode.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             std::mem::replace(&mut self.output_buffer[self.tag_size + index], byte);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let _ = std::mem::replace(&mut self.output_buffer[self.tag_size + index], byte);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/inode.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut inode_entry = match self.inodes_by_path.get_mut(path) {
[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: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/encode.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             std::mem::replace(&mut self.output_buffer[self.tag_size + index], byte);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let _ = std::mem::replace(&mut self.output_buffer[self.tag_size + index], byte);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.39s
[INFO] running `Command { std: "docker" "inspect" "d52823360023beb0e6cce7f7b9214563bbd39a39457193490ebeb8720cf1203c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d52823360023beb0e6cce7f7b9214563bbd39a39457193490ebeb8720cf1203c", kill_on_drop: false }`
[INFO] [stdout] d52823360023beb0e6cce7f7b9214563bbd39a39457193490ebeb8720cf1203c