[INFO] cloning repository https://github.com/pfernie/synacor-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pfernie/synacor-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fsynacor-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fsynacor-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c2677d8145793b1085adcae0aa1b1cb73bef1dc
[INFO] checking pfernie/synacor-rs against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfernie%2Fsynacor-rs" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pfernie/synacor-rs on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pfernie/synacor-rs
[INFO] finished tweaking git repo https://github.com/pfernie/synacor-rs
[INFO] tweaked toml for git repo https://github.com/pfernie/synacor-rs written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/pfernie/synacor-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e34471065b03b9e9dde59f607b4452c4a167f2852574049d9129cc9de05b2c5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0e34471065b03b9e9dde59f607b4452c4a167f2852574049d9129cc9de05b2c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e34471065b03b9e9dde59f607b4452c4a167f2852574049d9129cc9de05b2c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e34471065b03b9e9dde59f607b4452c4a167f2852574049d9129cc9de05b2c5", kill_on_drop: false }`
[INFO] [stdout] 0e34471065b03b9e9dde59f607b4452c4a167f2852574049d9129cc9de05b2c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d147972b9d68ae3e40728b9a5ac9b752539bba0a8c0095c0244590178dd0ffa3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d147972b9d68ae3e40728b9a5ac9b752539bba0a8c0095c0244590178dd0ffa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking unicode-segmentation v1.0.1
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking try_from v0.2.1
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking thread_local v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.6.1
[INFO] [stderr]     Checking clap v2.20.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]     Checking env_logger v0.4.0
[INFO] [stderr]     Checking synacor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/foo.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let t = thread::Builder::new().stack_size(1024 * 1024 * 32).spawn(move || {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/foo.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let t = thread::Builder::new().stack_size(1024 * 1024 * 32).spawn(move || {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/debugger/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl AsMut<Inspectable + 'static> for VmState {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/debugger/mod.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn as_mut(&mut self) -> &mut (Inspectable + 'static) {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/debugger/mod.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl AsRef<Inspectable + 'static> for VmState {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/debugger/mod.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn as_ref(&self) -> &(Inspectable + 'static) {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/memory.rs:326:14
[INFO] [stdout]     |
[INFO] [stdout] 326 |             0...MAX_ADDR => Ok(Value::Literal(u)),
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/memory.rs:327:18
[INFO] [stdout]     |
[INFO] [stdout] 327 |             32768...32776 => Register::try_from(u).map(Value::FromRegister),
[INFO] [stdout]     |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/debugger/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / error_chain!{
[INFO] [stdout] 3  | |     foreign_links {
[INFO] [stdout] 4  | |         Io(::std::io::Error);
[INFO] [stdout] 5  | |         ParseInt(::std::num::ParseIntError);
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |     }
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/debugger/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl AsMut<Inspectable + 'static> for VmState {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/debugger/mod.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn as_mut(&mut self) -> &mut (Inspectable + 'static) {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/debugger/mod.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl AsRef<Inspectable + 'static> for VmState {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/debugger/mod.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn as_ref(&self) -> &(Inspectable + 'static) {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/memory.rs:326:14
[INFO] [stdout]     |
[INFO] [stdout] 326 |             0...MAX_ADDR => Ok(Value::Literal(u)),
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/memory.rs:327:18
[INFO] [stdout]     |
[INFO] [stdout] 327 |             32768...32776 => Register::try_from(u).map(Value::FromRegister),
[INFO] [stdout]     |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/debugger/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / error_chain!{
[INFO] [stdout] 3  | |     foreign_links {
[INFO] [stdout] 4  | |         Io(::std::io::Error);
[INFO] [stdout] 5  | |         ParseInt(::std::num::ParseIntError);
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |     }
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/errors.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / error_chain!{
[INFO] [stdout] 3  | |     foreign_links {
[INFO] [stdout] 4  | |         Io(::std::io::Error);
[INFO] [stdout] 5  | |         ParseInt(::std::num::ParseIntError);
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |     }
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stdout]  --> src/debugger/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/errors.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / error_chain!{
[INFO] [stdout] 3  | |     foreign_links {
[INFO] [stdout] 4  | |         Io(::std::io::Error);
[INFO] [stdout] 5  | |         ParseInt(::std::num::ParseIntError);
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |     }
[INFO] [stdout] 42 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stdout]  --> src/debugger/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.74s
[INFO] running `Command { std: "docker" "inspect" "d147972b9d68ae3e40728b9a5ac9b752539bba0a8c0095c0244590178dd0ffa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d147972b9d68ae3e40728b9a5ac9b752539bba0a8c0095c0244590178dd0ffa3", kill_on_drop: false }`
[INFO] [stdout] d147972b9d68ae3e40728b9a5ac9b752539bba0a8c0095c0244590178dd0ffa3