[INFO] cloning repository https://github.com/thoughtworks/candouble
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thoughtworks/candouble" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthoughtworks%2Fcandouble", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthoughtworks%2Fcandouble'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf582f104b4be7a93e65996d100cf26dd4d2b71c
[INFO] checking thoughtworks/candouble against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthoughtworks%2Fcandouble" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thoughtworks/candouble on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thoughtworks/candouble
[INFO] finished tweaking git repo https://github.com/thoughtworks/candouble
[INFO] tweaked toml for git repo https://github.com/thoughtworks/candouble written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/thoughtworks/candouble already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a3779e764b7d22674922627137dcdc873741e1b061c185a11faaaa8f414793c2
[INFO] running `Command { std: "docker" "start" "-a" "a3779e764b7d22674922627137dcdc873741e1b061c185a11faaaa8f414793c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3779e764b7d22674922627137dcdc873741e1b061c185a11faaaa8f414793c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3779e764b7d22674922627137dcdc873741e1b061c185a11faaaa8f414793c2", kill_on_drop: false }`
[INFO] [stdout] a3779e764b7d22674922627137dcdc873741e1b061c185a11faaaa8f414793c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aab7f09cb07c98e7fc9c9e252284629c0a15e73e039fb4954d0f9ef268c4190f
[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" "aab7f09cb07c98e7fc9c9e252284629c0a15e73e039fb4954d0f9ef268c4190f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.10
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling bytecount v0.4.0
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking string v0.1.2
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling candouble v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.3
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking getopts v0.2.18
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]     Checking tokio-current-thread v0.1.4
[INFO] [stderr]     Checking smallvec v0.6.7
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]    Compiling serde_json v1.0.30
[INFO] [stderr]     Checking tokio-timer v0.2.8
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking http v0.1.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking crossbeam-deque v0.6.2
[INFO] [stderr]     Checking phf v0.7.23
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling syn v0.15.6
[INFO] [stderr]     Checking mime v0.3.12
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking backtrace v0.3.11
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking h2 v0.1.14
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]    Compiling gotham_derive v0.3.0
[INFO] [stderr]     Checking hyper v0.12.18
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling borrow-bag v1.0.0
[INFO] [stderr]     Checking gotham v0.3.0
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/imposter.rs:63:72
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn run_with_adaptor(id: u32, mut list: ImposterList, adaptor: &mut CANAdaptor) {
[INFO] [stdout]    |                                                                        ^^^^^^^^^^ help: use `dyn`: `dyn CANAdaptor`
[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/can/dummy.rs:10:32
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new() -> Result<Box<CANAdaptor>, &'static str> {
[INFO] [stdout]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn CANAdaptor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/can/mod.rs:62:39
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn create_adaptor() -> Result<Box<CANAdaptor>, &'static str> {
[INFO] [stdout]    |                                       ^^^^^^^^^^ help: use `dyn`: `dyn CANAdaptor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/imposter.rs:63:72
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn run_with_adaptor(id: u32, mut list: ImposterList, adaptor: &mut CANAdaptor) {
[INFO] [stdout]    |                                                                        ^^^^^^^^^^ help: use `dyn`: `dyn CANAdaptor`
[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/can/dummy.rs:10:32
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new() -> Result<Box<CANAdaptor>, &'static str> {
[INFO] [stdout]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn CANAdaptor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/can/mod.rs:62:39
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn create_adaptor() -> Result<Box<CANAdaptor>, &'static str> {
[INFO] [stdout]    |                                       ^^^^^^^^^^ help: use `dyn`: `dyn CANAdaptor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:17:28
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Err(f) => { panic!(f.to_string()) }
[INFO] [stdout]    |                            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Err(f) => { panic!("{}", f.to_string()) }
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Err(f) => { std::panic::panic_any(f.to_string()) }
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:17:28
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Err(f) => { panic!(f.to_string()) }
[INFO] [stdout]    |                            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Err(f) => { panic!("{}", f.to_string()) }
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 17 |         Err(f) => { std::panic::panic_any(f.to_string()) }
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 29s
[INFO] running `Command { std: "docker" "inspect" "aab7f09cb07c98e7fc9c9e252284629c0a15e73e039fb4954d0f9ef268c4190f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aab7f09cb07c98e7fc9c9e252284629c0a15e73e039fb4954d0f9ef268c4190f", kill_on_drop: false }`
[INFO] [stdout] aab7f09cb07c98e7fc9c9e252284629c0a15e73e039fb4954d0f9ef268c4190f