[INFO] fetching crate box-bin 0.3.1...
[INFO] checking box-bin-0.3.1 against master#c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2 for pr-142712
[INFO] extracting crate box-bin 0.3.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate box-bin 0.3.1
[INFO] finished tweaking crates.io crate box-bin 0.3.1
[INFO] tweaked toml for crates.io crate box-bin 0.3.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate box-bin 0.3.1 on toolchain c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate box-bin 0.3.1 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" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wild v2.0.4
[INFO] [stderr]   Downloaded sharded-slab v0.1.1
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[INFO] [stderr]   Downloaded zstd-safe v3.1.0+zstd.1.4.9
[INFO] [stderr]   Downloaded relative-path v1.3.2
[INFO] [stderr]   Downloaded snap v1.0.4
[INFO] [stderr]   Downloaded zstd v0.7.0+zstd.1.4.9
[INFO] [stderr]   Downloaded syn v1.0.70
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[INFO] [stderr]   Downloaded tracing-subscriber v0.2.17
[INFO] [stderr]   Downloaded unic-ucd-bidi v0.9.0
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[INFO] [stderr]   Downloaded jwalk v0.5.1
[INFO] [stderr]   Downloaded libc v0.2.93
[INFO] [stderr]   Downloaded fastvlq v1.0.0
[INFO] [stderr]   Downloaded unic-ucd-age v0.9.0
[INFO] [stderr]   Downloaded unic-ucd-name_aliases v0.9.0
[INFO] [stderr]   Downloaded lzma-sys v0.1.17
[INFO] [stderr]   Downloaded zstd-sys v1.5.0+zstd.1.4.9
[INFO] [stderr]   Downloaded comde v0.2.2
[INFO] [stderr]   Downloaded pathtrie v0.1.1
[INFO] [stderr]   Downloaded box-format v0.3.1
[INFO] [stderr]   Downloaded core2 v0.3.0-alpha.1
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e94527e86e4fe1993db4c995dca8183064d58492ac6d776b5f08fe701888307
[INFO] running `Command { std: "docker" "start" "-a" "3e94527e86e4fe1993db4c995dca8183064d58492ac6d776b5f08fe701888307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e94527e86e4fe1993db4c995dca8183064d58492ac6d776b5f08fe701888307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e94527e86e4fe1993db4c995dca8183064d58492ac6d776b5f08fe701888307", kill_on_drop: false }`
[INFO] [stdout] 3e94527e86e4fe1993db4c995dca8183064d58492ac6d776b5f08fe701888307
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 433c4ea9611a005d329a06ade0e7b524feec3ea145038e88f3f34538e38bf9cf
[INFO] running `Command { std: "docker" "start" "-a" "433c4ea9611a005d329a06ade0e7b524feec3ea145038e88f3f34538e38bf9cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
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[INFO] [stderr]    Compiling pkg-config v0.3.19
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[INFO] [stderr]    Compiling crc32fast v1.2.1
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[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling box-format v0.3.1
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[INFO] [stderr]     Checking ansi_term v0.12.1
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[INFO] [stderr]     Checking relative-path v1.3.2
[INFO] [stderr]     Checking pathdiff v0.2.0
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]    Compiling box-bin v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking wild v2.0.4
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]    Compiling zstd-sys v1.5.0+zstd.1.4.9
[INFO] [stderr]    Compiling lzma-sys v0.1.17
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]     Checking jwalk v0.5.1
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling delegate v0.5.1
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking tracing-subscriber v0.2.17
[INFO] [stderr]     Checking pathtrie v0.1.1
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking unic-ucd v0.9.0
[INFO] [stderr]     Checking zstd v0.7.0+zstd.1.4.9
[INFO] [stderr]     Checking comde v0.2.2
[INFO] [stdout] warning: unused import: `BufWriter`
[INFO] [stdout]  --> src/main.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{BufReader, BufWriter, Read, Write};
[INFO] [stdout]   |                          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufWriter`
[INFO] [stdout]  --> src/main.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{BufReader, BufWriter, Read, Write};
[INFO] [stdout]   |                          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/main.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{BufReader, BufWriter, Read, Write};
[INFO] [stdout]   |                                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/main.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{BufReader, BufWriter, Read, Write};
[INFO] [stdout]   |                                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]    --> src/main.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     Test {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 205 |         path: PathBuf,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Commands` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]    --> src/main.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     Test {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 205 |         path: PathBuf,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Commands` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 59.31s
[INFO] running `Command { std: "docker" "inspect" "433c4ea9611a005d329a06ade0e7b524feec3ea145038e88f3f34538e38bf9cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "433c4ea9611a005d329a06ade0e7b524feec3ea145038e88f3f34538e38bf9cf", kill_on_drop: false }`
[INFO] [stdout] 433c4ea9611a005d329a06ade0e7b524feec3ea145038e88f3f34538e38bf9cf