[INFO] fetching crate convchain 0.2.1...
[INFO] checking convchain-0.2.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate convchain 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate convchain 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate convchain 0.2.1
[INFO] tweaked toml for crates.io crate convchain 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate convchain 0.2.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate convchain 0.2.1 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e076855eeb4049f13fdd0c17c0fa8549224039ce5db7bce043336b86c0de40d
[INFO] running `Command { std: "docker" "start" "-a" "7e076855eeb4049f13fdd0c17c0fa8549224039ce5db7bce043336b86c0de40d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e076855eeb4049f13fdd0c17c0fa8549224039ce5db7bce043336b86c0de40d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e076855eeb4049f13fdd0c17c0fa8549224039ce5db7bce043336b86c0de40d", kill_on_drop: false }`
[INFO] [stdout] 7e076855eeb4049f13fdd0c17c0fa8549224039ce5db7bce043336b86c0de40d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68ba282a6ae3c1441df151669e4bcfb49e4cf26e7ad1bfbef3314d9649250b42
[INFO] running `Command { std: "docker" "start" "-a" "68ba282a6ae3c1441df151669e4bcfb49e4cf26e7ad1bfbef3314d9649250b42", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]     Checking gif v0.11.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking convchain v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `field`
[INFO] [stdout]   --> src/fast.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let field = &self.field;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_field`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: unused variable: `field`
[INFO] [stdout]   --> src/fast.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let field = &self.field;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_field`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `convchain::slow`
[INFO] [stdout]  --> examples/conv_chain.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use convchain::slow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `conv_chain_slow` in this scope
[INFO] [stdout]   --> examples/conv_chain.rs:24:26
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let result = conv_chain_slow(
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `convchain` (example "slow") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "68ba282a6ae3c1441df151669e4bcfb49e4cf26e7ad1bfbef3314d9649250b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68ba282a6ae3c1441df151669e4bcfb49e4cf26e7ad1bfbef3314d9649250b42", kill_on_drop: false }`
[INFO] [stdout] 68ba282a6ae3c1441df151669e4bcfb49e4cf26e7ad1bfbef3314d9649250b42