[INFO] fetching crate lz_diet 0.1.6...
[INFO] checking lz_diet-0.1.6 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate lz_diet 0.1.6 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate lz_diet 0.1.6
[INFO] finished tweaking crates.io crate lz_diet 0.1.6
[INFO] tweaked toml for crates.io crate lz_diet 0.1.6 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lz_diet 0.1.6 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lz_diet 0.1.6 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e94e1ae88413186a8610dc4f5211262e04c9d7b77dfe4839dcaebd091ff4fe47
[INFO] running `Command { std: "docker" "start" "-a" "e94e1ae88413186a8610dc4f5211262e04c9d7b77dfe4839dcaebd091ff4fe47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e94e1ae88413186a8610dc4f5211262e04c9d7b77dfe4839dcaebd091ff4fe47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e94e1ae88413186a8610dc4f5211262e04c9d7b77dfe4839dcaebd091ff4fe47", kill_on_drop: false }`
[INFO] [stdout] e94e1ae88413186a8610dc4f5211262e04c9d7b77dfe4839dcaebd091ff4fe47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75604a44fcfbc4c19b4a827978f2f4db2e830d2bfbe33bd04f6d9d5dac14d6c1
[INFO] running `Command { std: "docker" "start" "-a" "75604a44fcfbc4c19b4a827978f2f4db2e830d2bfbe33bd04f6d9d5dac14d6c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking binary-tree v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.7
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking lz_diet v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stdout] warning: methods `insert_after`, `insert_max`, and `insert_min` are never used
[INFO] [stdout]   --> src/node_mut_ext.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub(crate) trait NodeMutExt: NodeMut {
[INFO] [stdout]    |                  ---------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn insert_after<F>(&mut self, new_node: <Self as NodeMut>::NodePtr, mut step_out: F)
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn insert_max<F>(&mut self, new_node: <Self as NodeMut>::NodePtr, mut step_out: F)
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn insert_min<F>(&mut self, new_node: <Self as NodeMut>::NodePtr, mut step_out: F)
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stdout]    |                 ^^^^^     ------- the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stdout] warning: methods `insert_after`, `insert_max`, and `insert_min` are never used
[INFO] [stdout]   --> src/node_mut_ext.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub(crate) trait NodeMutExt: NodeMut {
[INFO] [stdout]    |                  ---------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn insert_after<F>(&mut self, new_node: <Self as NodeMut>::NodePtr, mut step_out: F)
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn insert_max<F>(&mut self, new_node: <Self as NodeMut>::NodePtr, mut step_out: F)
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn insert_min<F>(&mut self, new_node: <Self as NodeMut>::NodePtr, mut step_out: F)
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stdout]    |                 ^^^^^     ------- the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.95s
[INFO] running `Command { std: "docker" "inspect" "75604a44fcfbc4c19b4a827978f2f4db2e830d2bfbe33bd04f6d9d5dac14d6c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75604a44fcfbc4c19b4a827978f2f4db2e830d2bfbe33bd04f6d9d5dac14d6c1", kill_on_drop: false }`
[INFO] [stdout] 75604a44fcfbc4c19b4a827978f2f4db2e830d2bfbe33bd04f6d9d5dac14d6c1