[INFO] cloning repository https://github.com/jimblandy/fxsnapshot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jimblandy/fxsnapshot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Ffxsnapshot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Ffxsnapshot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 878370cec5e5a414f13af9bac28a9a252363507a
[INFO] checking jimblandy/fxsnapshot against try#14e4661efa5acbf985e4fe564baae04683366cc1 for pr-157696
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Ffxsnapshot" "/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/jimblandy/fxsnapshot
[INFO] finished tweaking git repo https://github.com/jimblandy/fxsnapshot
[INFO] tweaked toml for git repo https://github.com/jimblandy/fxsnapshot written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jimblandy/fxsnapshot on toolchain 14e4661efa5acbf985e4fe564baae04683366cc1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jimblandy/fxsnapshot 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" "+14e4661efa5acbf985e4fe564baae04683366cc1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 8a323b4535cfe7a75df61e32ff7cac587f9b869752d6967462957f0303282099
[INFO] running `Command { std: "docker" "start" "8a323b4535cfe7a75df61e32ff7cac587f9b869752d6967462957f0303282099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "8a323b4535cfe7a75df61e32ff7cac587f9b869752d6967462957f0303282099" "/opt/rustwide/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a323b4535cfe7a75df61e32ff7cac587f9b869752d6967462957f0303282099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "8a323b4535cfe7a75df61e32ff7cac587f9b869752d6967462957f0303282099" "/opt/rustwide/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
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[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling byteorder v1.4.3
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[INFO] [stderr]    Compiling textwrap v0.11.0
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[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
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[INFO] [stderr]    Compiling rand_os v0.1.3
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[INFO] [stderr]    Compiling memchr v1.0.2
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[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]     Checking fallible-iterator v0.2.0 (https://github.com/sfackler/rust-fallible-iterator.git?rev=11ea3bf0e6ad2bc4f4fe220d6c3332942e5dfa35#11ea3bf0)
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[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling pb-rs v0.9.1
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]    Compiling docopt v1.1.1
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling fxsnapshot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `timestamp` is never read
[INFO] [stdout]   --> src/dump/mod.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct CoreDump<'buffer> {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub timestamp: Option<u64>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FrameId` is never constructed
[INFO] [stdout]   --> src/dump/mod.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub struct FrameId(u64);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/dump/mod.rs:153:56
[INFO] [stdout]     |
[INFO] [stdout] 153 |     pub fn nodes<'a>(&'a self) -> impl Iterator<Item = &Node<'buffer>> + Clone + 'a {
[INFO] [stdout]     |                       --                               ^^^^^^^^^^^^^^            -- the same lifetime is named here
[INFO] [stdout]     |                       |                                |
[INFO] [stdout]     |                       the lifetime is named here       the same 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 153 |     pub fn nodes<'a>(&'a self) -> impl Iterator<Item = &'a Node<'buffer>> + Clone + 'a {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/query/fun.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn name(&self) -> Cow<str> {
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn name(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/query/run.rs:408:13
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn name(&self) -> Cow<str> {
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn name(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/query/value.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn name(&self) -> Cow<str>;
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn name(&self) -> Cow<'_, str>;
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/query/value.rs:324:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |     fn name(&self) -> Cow<str> {
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 324 |     fn name(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `timestamp` is never read
[INFO] [stdout]   --> src/dump/mod.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct CoreDump<'buffer> {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub timestamp: Option<u64>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FrameId` is never constructed
[INFO] [stdout]   --> src/dump/mod.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub struct FrameId(u64);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/dump/mod.rs:153:56
[INFO] [stdout]     |
[INFO] [stdout] 153 |     pub fn nodes<'a>(&'a self) -> impl Iterator<Item = &Node<'buffer>> + Clone + 'a {
[INFO] [stdout]     |                       --                               ^^^^^^^^^^^^^^            -- the same lifetime is named here
[INFO] [stdout]     |                       |                                |
[INFO] [stdout]     |                       the lifetime is named here       the same 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 153 |     pub fn nodes<'a>(&'a self) -> impl Iterator<Item = &'a Node<'buffer>> + Clone + 'a {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/query/fun.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn name(&self) -> Cow<str> {
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn name(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/query/run.rs:408:13
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn name(&self) -> Cow<str> {
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn name(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/query/value.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn name(&self) -> Cow<str>;
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn name(&self) -> Cow<'_, str>;
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/query/value.rs:324:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |     fn name(&self) -> Cow<str> {
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 324 |     fn name(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.99s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.16.3, nom v3.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "8a323b4535cfe7a75df61e32ff7cac587f9b869752d6967462957f0303282099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a323b4535cfe7a75df61e32ff7cac587f9b869752d6967462957f0303282099", kill_on_drop: false }`
[INFO] [stdout] 8a323b4535cfe7a75df61e32ff7cac587f9b869752d6967462957f0303282099
